[INFO] updating cached repository SirVer/notify_crash
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SirVer/notify_crash
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SirVer/notify_crash" "work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SirVer/notify_crash" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SirVer/notify_crash"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SirVer/notify_crash'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bfb9c03dfa3114978e19ec12c8b61b8df20cd2c0
[INFO] sha for GitHub repo SirVer/notify_crash: bfb9c03dfa3114978e19ec12c8b61b8df20cd2c0
[INFO] validating manifest of SirVer/notify_crash on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SirVer/notify_crash on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SirVer/notify_crash
[INFO] finished frobbing SirVer/notify_crash
[INFO] frobbed toml for SirVer/notify_crash written to work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash/Cargo.toml
[INFO] started frobbing SirVer/notify_crash
[INFO] finished frobbing SirVer/notify_crash
[INFO] frobbed toml for SirVer/notify_crash written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SirVer/notify_crash/Cargo.toml
[INFO] crate SirVer/notify_crash already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing SirVer/notify_crash against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 425f13fe084edc834b4a7e580597506af2332e65ee3ffd59b08be307eabafc04
[INFO] running `"docker" "start" "-a" "425f13fe084edc834b4a7e580597506af2332e65ee3ffd59b08be307eabafc04"`
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling inotify v0.2.3
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]    Compiling notify v2.6.3
[INFO] [stderr]    Compiling notify_crash v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Err(e) => println!("Error")
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |   let mut w: Result<RecommendedWatcher, Error> = Watcher::new(tx);
[INFO] [stderr]    |       ----^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.32s
[INFO] running `"docker" "inspect" "425f13fe084edc834b4a7e580597506af2332e65ee3ffd59b08be307eabafc04"`
[INFO] running `"docker" "rm" "-f" "425f13fe084edc834b4a7e580597506af2332e65ee3ffd59b08be307eabafc04"`
[INFO] [stdout] 425f13fe084edc834b4a7e580597506af2332e65ee3ffd59b08be307eabafc04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7f93e8c623177298e9fb85c4b24a7e5362864f1ddbd9035cb825885d44024e43
[INFO] running `"docker" "start" "-a" "7f93e8c623177298e9fb85c4b24a7e5362864f1ddbd9035cb825885d44024e43"`
[INFO] [stderr]    Compiling notify_crash v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Err(e) => println!("Error")
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |   let mut w: Result<RecommendedWatcher, Error> = Watcher::new(tx);
[INFO] [stderr]    |       ----^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "7f93e8c623177298e9fb85c4b24a7e5362864f1ddbd9035cb825885d44024e43"`
[INFO] running `"docker" "rm" "-f" "7f93e8c623177298e9fb85c4b24a7e5362864f1ddbd9035cb825885d44024e43"`
[INFO] [stdout] 7f93e8c623177298e9fb85c4b24a7e5362864f1ddbd9035cb825885d44024e43
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SirVer/notify_crash:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] dec1e811095a3d482f1053a37e5de72f26dfabf4f5f87006f244fef4c52c2f24
[INFO] running `"docker" "start" "-a" "dec1e811095a3d482f1053a37e5de72f26dfabf4f5f87006f244fef4c52c2f24"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/notify_crash-71516c01925c3089
[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" "dec1e811095a3d482f1053a37e5de72f26dfabf4f5f87006f244fef4c52c2f24"`
[INFO] running `"docker" "rm" "-f" "dec1e811095a3d482f1053a37e5de72f26dfabf4f5f87006f244fef4c52c2f24"`
[INFO] [stdout] dec1e811095a3d482f1053a37e5de72f26dfabf4f5f87006f244fef4c52c2f24