[INFO] crate conch-runtime 0.1.5 is already in cache
[INFO] extracting crate conch-runtime 0.1.5 into work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/reg/conch-runtime/0.1.5
[INFO] extracting crate conch-runtime 0.1.5 into work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/reg/conch-runtime/0.1.5
[INFO] validating manifest of conch-runtime-0.1.5 on toolchain master#6ecad338381cc3b8d56e2df22e5971a598eddd6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of conch-runtime-0.1.5 on toolchain try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing conch-runtime-0.1.5
[INFO] finished frobbing conch-runtime-0.1.5
[INFO] frobbed toml for conch-runtime-0.1.5 written to work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/reg/conch-runtime/0.1.5/Cargo.toml
[INFO] started frobbing conch-runtime-0.1.5
[INFO] finished frobbing conch-runtime-0.1.5
[INFO] frobbed toml for conch-runtime-0.1.5 written to work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/reg/conch-runtime/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking conch-runtime-0.1.5 against try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f for pr-57501
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57501/worker-6/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/reg/conch-runtime/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] be3d8e79aa1c623472790a25475fa0cf2f741377447738498d5820b25a6e5c6a
[INFO] running `"docker" "start" "-a" "be3d8e79aa1c623472790a25475fa0cf2f741377447738498d5820b25a6e5c6a"`
[INFO] [stderr]     Checking owned_chars v0.2.1
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-signal v0.1.5
[INFO] [stderr]     Checking tokio-process v0.1.6
[INFO] [stderr]     Checking conch-runtime v0.1.5 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `VarRestorer`
[INFO] [stderr]  --> src/eval/redirect_or_var_assig.rs:3:67
[INFO] [stderr]   |
[INFO] [stderr] 3 |           RedirectRestorer, VarEnvRestorer2, VariableEnvironment, VarRestorer};
[INFO] [stderr]   |                                                                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `VarRestorer`
[INFO] [stderr]  --> src/eval/redirect_or_var_assig.rs:3:67
[INFO] [stderr]   |
[INFO] [stderr] 3 |           RedirectRestorer, VarEnvRestorer2, VariableEnvironment, VarRestorer};
[INFO] [stderr]   |                                                                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: type vs variant ambiguity
[INFO] [stderr]    --> src/eval/ast_impl/param_subst.rs:315:57
[INFO] [stderr]     |
[INFO] [stderr] 315 |     fn poll(&mut self, env: &mut E) -> Poll<Self::Item, Self::Error> {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[forbid(type_vs_variant_ambiguity)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `conch-runtime`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: type vs variant ambiguity
[INFO] [stderr]    --> src/eval/ast_impl/param_subst.rs:315:57
[INFO] [stderr]     |
[INFO] [stderr] 315 |     fn poll(&mut self, env: &mut E) -> Poll<Self::Item, Self::Error> {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[forbid(type_vs_variant_ambiguity)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `conch-runtime`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "be3d8e79aa1c623472790a25475fa0cf2f741377447738498d5820b25a6e5c6a"`
[INFO] running `"docker" "rm" "-f" "be3d8e79aa1c623472790a25475fa0cf2f741377447738498d5820b25a6e5c6a"`
[INFO] [stdout] be3d8e79aa1c623472790a25475fa0cf2f741377447738498d5820b25a6e5c6a