[INFO] crate derive-error 0.0.4 is already in cache
[INFO] extracting crate derive-error 0.0.4 into work/ex/beta-1.37-6/sources/1.36.0/reg/derive-error/0.0.4
[INFO] extracting crate derive-error 0.0.4 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/derive-error/0.0.4
[INFO] validating manifest of derive-error-0.0.4 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of derive-error-0.0.4 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing derive-error-0.0.4
[INFO] finished frobbing derive-error-0.0.4
[INFO] frobbed toml for derive-error-0.0.4 written to work/ex/beta-1.37-6/sources/1.36.0/reg/derive-error/0.0.4/Cargo.toml
[INFO] started frobbing derive-error-0.0.4
[INFO] finished frobbing derive-error-0.0.4
[INFO] frobbed toml for derive-error-0.0.4 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/derive-error/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing derive-error-0.0.4 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/derive-error/0.0.4:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f5ba8e2faddb2432c689a94c0191b93e5a8d330be8653078f3e043bc22b59934
[INFO] running `"docker" "start" "-a" "f5ba8e2faddb2432c689a94c0191b93e5a8d330be8653078f3e043bc22b59934"`
[INFO] [stderr]    Compiling derive-error v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/error.rs:202:40
[INFO] [stderr]     |
[INFO] [stderr] 202 |                         let doc = line.trim_left_matches("///");
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `"docker" "inspect" "f5ba8e2faddb2432c689a94c0191b93e5a8d330be8653078f3e043bc22b59934"`
[INFO] running `"docker" "rm" "-f" "f5ba8e2faddb2432c689a94c0191b93e5a8d330be8653078f3e043bc22b59934"`
[INFO] [stdout] f5ba8e2faddb2432c689a94c0191b93e5a8d330be8653078f3e043bc22b59934
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/derive-error/0.0.4:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0a0bff1e0282bd6fe4da03bcbbe46ac145ddea38caa4ac0059964e2335e06cfe
[INFO] running `"docker" "start" "-a" "0a0bff1e0282bd6fe4da03bcbbe46ac145ddea38caa4ac0059964e2335e06cfe"`
[INFO] [stderr]    Compiling rspec v1.0.0-beta.4
[INFO] [stderr]    Compiling derive-error v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/error.rs:202:40
[INFO] [stderr]     |
[INFO] [stderr] 202 |                         let doc = line.trim_left_matches("///");
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `"docker" "inspect" "0a0bff1e0282bd6fe4da03bcbbe46ac145ddea38caa4ac0059964e2335e06cfe"`
[INFO] running `"docker" "rm" "-f" "0a0bff1e0282bd6fe4da03bcbbe46ac145ddea38caa4ac0059964e2335e06cfe"`
[INFO] [stdout] 0a0bff1e0282bd6fe4da03bcbbe46ac145ddea38caa4ac0059964e2335e06cfe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/derive-error/0.0.4:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] c47c086cd3f9e77075a05fb8bff25547ef37dc1e232c71bd0a481c8c45bbcef6
[INFO] running `"docker" "start" "-a" "c47c086cd3f9e77075a05fb8bff25547ef37dc1e232c71bd0a481c8c45bbcef6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/derive_error-40ae3bdca15722e5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/behaviour-c8a434d9e61d952f
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 
[INFO] [stdout] tests:
[INFO] [stdout] 
[INFO] [stdout] Describe "the implementation"
[INFO] [stdout]   It "should be able to derive from unit structs" ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored
[INFO] [stdout] test error_behaviour ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests derive-error
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c47c086cd3f9e77075a05fb8bff25547ef37dc1e232c71bd0a481c8c45bbcef6"`
[INFO] running `"docker" "rm" "-f" "c47c086cd3f9e77075a05fb8bff25547ef37dc1e232c71bd0a481c8c45bbcef6"`
[INFO] [stdout] c47c086cd3f9e77075a05fb8bff25547ef37dc1e232c71bd0a481c8c45bbcef6