I'm not sure what the problem is, but whenever I build with -release mode, and use `ae` as a dependency, it's failing to link with a slew of symbols in phobos and elsewhere. I have a suspicion there is a weird dub configuration thing going on. This is on Ubuntu Linux 20.04, with dmd 2.096.0 ```console steves@homebuild:~/git$ mkdir testae steves@homebuild:~/git$ cd testae steves@homebuild:~/git/testae$ dub init . Package recipe format (sdl/json) [json]: Name [testae]: Description [A minimal D application.]: Author name [Steven Schveighoffer]: License [proprietary]: Copyright string [Copyright © 2021, Steven Schveighoffer]: Add dependency (leave empty to skip) []: ae Adding dependency ae ~>0.0.3064 Add dependency (leave empty to skip) []: Successfully created an empty project in '/home/steves/git/testae'. Package successfully created in . steves@homebuild:~/git/testae$ dub Performing "debug" build using /home/steves/.dvm/compilers/dmd-2.096.0/linux/bin/dmd for x86_64. testae ~master: building configuration "application"... Linking... Running testae Edit source/app.d to start your project. steves@homebuild:~/git/testae$ dub -b release Performing "release" build using /home/steves/.dvm/compilers/dmd-2.096.0/linux/bin/dmd for x86_64. testae ~master: building configuration "application"... Linking... /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D2ae3sys3vfs4curl7CurlVFS4readMFAyaZAv': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D2ae3sys3vfs4curl7CurlVFS4readMFAyaZAv[_D2ae3sys3vfs4curl7CurlVFS4readMFAyaZAv]+0x70): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeTQhZQByFNaNfQwQuQwQyZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T3getTSQwQuQs12AutoProtocolThZQBdFAxaQBfZAh': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T3getTSQwQuQs12AutoProtocolThZQBdFAxaQBfZAh[_D3std3net4curl__T3getTSQwQuQs12AutoProtocolThZQBdFAxaQBfZAh]+0x6c): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeTQhZQByFNaNfQwQuQwQyZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T9_basicFTPThZQnFAxaAxvSQBnQBmQBl3FTPZAh': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T9_basicFTPThZQnFAxaAxvSQBnQBmQBl3FTPZAh[_D3std3net4curl__T9_basicFTPThZQnFAxaAxvSQBnQBmQBl3FTPZAh]+0x162): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeZQBvFNaNfQtQrQtZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T10_basicHTTPThZQpFAxaAxvSQBpQBoQBn4HTTPZAh': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T10_basicHTTPThZQpFAxaAxvSQBpQBoQBn4HTTPZAh[_D3std3net4curl__T10_basicHTTPThZQpFAxaAxvSQBpQBoQBn4HTTPZAh]+0x140): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeZQBvFNaNfQtQrQtZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T3putTSQwQuQs12AutoProtocolThThZQBfFAxaAxhQBkZAh': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T3putTSQwQuQs12AutoProtocolThThZQBfFAxaAxhQBkZAh[_D3std3net4curl__T3putTSQwQuQs12AutoProtocolThThZQBfFAxaAxhQBkZAh]+0x80): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeTQhZQByFNaNfQwQuQwQyZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T3delTSQwQuQs12AutoProtocolZQBbFAxaQBdZv': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T3delTSQwQuQs12AutoProtocolZQBbFAxaQBdZv[_D3std3net4curl__T3delTSQwQuQs12AutoProtocolZQBbFAxaQBdZv]+0x6c): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeTQhZQByFNaNfQwQuQwQyZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T3delTSQwQuQs3FTPZQrFAxaQsZv': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T3delTSQwQuQs3FTPZQrFAxaQsZv[_D3std3net4curl__T3delTSQwQuQs3FTPZQrFAxaQsZv]+0xfc): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeZQBvFNaNfQtQrQtZk' /usr/bin/ld: .dub/build/application-release-linux.posix-x86_64-dmd_v2.096.0-1D4819BCAA283A58753C58D89DC45D58/testae.o: in function `_D3std3net4curl__T10_basicHTTPTaZQpFAxaAxvSQBpQBoQBn4HTTPZAa': ../../.dub/packages/ae-0.0.3064/ae/utils/zlib.d:(.text._D3std3net4curl__T10_basicHTTPTaZQpFAxaAxvSQBpQBoQBn4HTTPZAa[_D3std3net4curl__T10_basicHTTPTaZQpFAxaAxvSQBpQBoQBn4HTTPZAa]+0x140): undefined reference to `_D3std9algorithm9searching__T10startsWithSQBoQBnQBg11__lambda168TAxaTAyaTQeZQBvFNaNfQtQrQtZk' collect2: error: ld returned 1 exit status Error: linker exited with status 1 /home/steves/.dvm/compilers/dmd-2.096.0/linux/bin/dmd failed with exit code 1. ```