[INFO] updating cached repository tshlabs/maestro
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tshlabs/maestro
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tshlabs/maestro" "work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tshlabs/maestro" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tshlabs/maestro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tshlabs/maestro'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ccf59900ea70d9214729c4b4a70d80040986fc45
[INFO] sha for GitHub repo tshlabs/maestro: ccf59900ea70d9214729c4b4a70d80040986fc45
[INFO] validating manifest of tshlabs/maestro 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 tshlabs/maestro 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 tshlabs/maestro
[INFO] finished frobbing tshlabs/maestro
[INFO] frobbed toml for tshlabs/maestro written to work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro/Cargo.toml
[INFO] started frobbing tshlabs/maestro
[INFO] finished frobbing tshlabs/maestro
[INFO] frobbed toml for tshlabs/maestro written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tshlabs/maestro/Cargo.toml
[INFO] crate tshlabs/maestro 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tshlabs/maestro 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro:/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] f36b2fff7fe22b82f26817915b5966a8be0f4c807194b0278c963b67de8333f3
[INFO] running `"docker" "start" "-a" "f36b2fff7fe22b82f26817915b5966a8be0f4c807194b0278c963b67de8333f3"`
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling signal-hook v0.1.8
[INFO] [stderr]    Compiling maestro v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.86s
[INFO] running `"docker" "inspect" "f36b2fff7fe22b82f26817915b5966a8be0f4c807194b0278c963b67de8333f3"`
[INFO] running `"docker" "rm" "-f" "f36b2fff7fe22b82f26817915b5966a8be0f4c807194b0278c963b67de8333f3"`
[INFO] [stdout] f36b2fff7fe22b82f26817915b5966a8be0f4c807194b0278c963b67de8333f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro:/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] 2f5440e4e308226261ada86596081bee00b2ef370f0fdccaf9811732d3f0acee
[INFO] running `"docker" "start" "-a" "2f5440e4e308226261ada86596081bee00b2ef370f0fdccaf9811732d3f0acee"`
[INFO] [stderr]    Compiling maestro v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "2f5440e4e308226261ada86596081bee00b2ef370f0fdccaf9811732d3f0acee"`
[INFO] running `"docker" "rm" "-f" "2f5440e4e308226261ada86596081bee00b2ef370f0fdccaf9811732d3f0acee"`
[INFO] [stdout] 2f5440e4e308226261ada86596081bee00b2ef370f0fdccaf9811732d3f0acee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tshlabs/maestro:/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] 6caa6043f31f2e7374c08e9dac36ebfdc06b8785840bad3646f1ecf14ec69fdd
[INFO] running `"docker" "start" "-a" "6caa6043f31f2e7374c08e9dac36ebfdc06b8785840bad3646f1ecf14ec69fdd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/maestro-53892802f3f9e421
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_thread_masker_allowed_for_thread ... ok
[INFO] [stdout] test tests::test_thread_masker_blocked_for_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/maestro-70992300adbe5788
[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]    Doc-tests maestro
[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" "6caa6043f31f2e7374c08e9dac36ebfdc06b8785840bad3646f1ecf14ec69fdd"`
[INFO] running `"docker" "rm" "-f" "6caa6043f31f2e7374c08e9dac36ebfdc06b8785840bad3646f1ecf14ec69fdd"`
[INFO] [stdout] 6caa6043f31f2e7374c08e9dac36ebfdc06b8785840bad3646f1ecf14ec69fdd