[INFO] crate crate_hello_world 0.1.1 is already in cache
[INFO] extracting crate crate_hello_world 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/crate_hello_world/0.1.1
[INFO] extracting crate crate_hello_world 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crate_hello_world/0.1.1
[INFO] validating manifest of crate_hello_world-0.1.1 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 crate_hello_world-0.1.1 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 crate_hello_world-0.1.1
[INFO] finished frobbing crate_hello_world-0.1.1
[INFO] frobbed toml for crate_hello_world-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/crate_hello_world/0.1.1/Cargo.toml
[INFO] started frobbing crate_hello_world-0.1.1
[INFO] finished frobbing crate_hello_world-0.1.1
[INFO] frobbed toml for crate_hello_world-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crate_hello_world/0.1.1/Cargo.toml
[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 crate_hello_world-0.1.1 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/crate_hello_world/0.1.1:/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] 37d026519b819302b4a1ae63034c066559ac9ce7db6c9948f16d88fdf5acbbec
[INFO] running `"docker" "start" "-a" "37d026519b819302b4a1ae63034c066559ac9ce7db6c9948f16d88fdf5acbbec"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/src/main.rs
[INFO] [stderr]    Compiling crate_hello_world v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn main() {
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "37d026519b819302b4a1ae63034c066559ac9ce7db6c9948f16d88fdf5acbbec"`
[INFO] running `"docker" "rm" "-f" "37d026519b819302b4a1ae63034c066559ac9ce7db6c9948f16d88fdf5acbbec"`
[INFO] [stdout] 37d026519b819302b4a1ae63034c066559ac9ce7db6c9948f16d88fdf5acbbec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/crate_hello_world/0.1.1:/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] da3beaa56481faf24fc1f2c9cb79471664c0f2bf05bf4d9b69c9a38b1063d421
[INFO] running `"docker" "start" "-a" "da3beaa56481faf24fc1f2c9cb79471664c0f2bf05bf4d9b69c9a38b1063d421"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/src/main.rs
[INFO] [stderr]    Compiling crate_hello_world v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "da3beaa56481faf24fc1f2c9cb79471664c0f2bf05bf4d9b69c9a38b1063d421"`
[INFO] running `"docker" "rm" "-f" "da3beaa56481faf24fc1f2c9cb79471664c0f2bf05bf4d9b69c9a38b1063d421"`
[INFO] [stdout] da3beaa56481faf24fc1f2c9cb79471664c0f2bf05bf4d9b69c9a38b1063d421
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/crate_hello_world/0.1.1:/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] b3ec8877906beffb29d129e723aa95ff0ab7f64bb15bd1c7658b91fd9ba89fd8
[INFO] running `"docker" "start" "-a" "b3ec8877906beffb29d129e723aa95ff0ab7f64bb15bd1c7658b91fd9ba89fd8"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/src/main.rs
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/crate_hello_world-721722cea2760c35
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/crate_hello_world-1bc1774a260c5725
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests crate_hello_world
[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] [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" "b3ec8877906beffb29d129e723aa95ff0ab7f64bb15bd1c7658b91fd9ba89fd8"`
[INFO] running `"docker" "rm" "-f" "b3ec8877906beffb29d129e723aa95ff0ab7f64bb15bd1c7658b91fd9ba89fd8"`
[INFO] [stdout] b3ec8877906beffb29d129e723aa95ff0ab7f64bb15bd1c7658b91fd9ba89fd8