[INFO] updating cached repository vwxyzjn/hello_cargo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vwxyzjn/hello_cargo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vwxyzjn/hello_cargo" "work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vwxyzjn/hello_cargo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vwxyzjn/hello_cargo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vwxyzjn/hello_cargo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d80a695580dca9b97880dd3f50e39d34ca3f6891
[INFO] sha for GitHub repo vwxyzjn/hello_cargo: d80a695580dca9b97880dd3f50e39d34ca3f6891
[INFO] validating manifest of vwxyzjn/hello_cargo 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 vwxyzjn/hello_cargo 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 vwxyzjn/hello_cargo
[INFO] finished frobbing vwxyzjn/hello_cargo
[INFO] frobbed toml for vwxyzjn/hello_cargo written to work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo/Cargo.toml
[INFO] started frobbing vwxyzjn/hello_cargo
[INFO] finished frobbing vwxyzjn/hello_cargo
[INFO] frobbed toml for vwxyzjn/hello_cargo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vwxyzjn/hello_cargo/Cargo.toml
[INFO] crate vwxyzjn/hello_cargo 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 vwxyzjn/hello_cargo 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo:/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] b1a08fc43172eea84e550c29be1b6f9bdd4a0d13e2aea2f7c245c49ea8c37549
[INFO] running `"docker" "start" "-a" "b1a08fc43172eea84e550c29be1b6f9bdd4a0d13e2aea2f7c245c49ea8c37549"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "b1a08fc43172eea84e550c29be1b6f9bdd4a0d13e2aea2f7c245c49ea8c37549"`
[INFO] running `"docker" "rm" "-f" "b1a08fc43172eea84e550c29be1b6f9bdd4a0d13e2aea2f7c245c49ea8c37549"`
[INFO] [stdout] b1a08fc43172eea84e550c29be1b6f9bdd4a0d13e2aea2f7c245c49ea8c37549
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo:/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] 863cdd36bd8d3fea4ec582d19424b27262c64c06f20de1e71020ff2c27765643
[INFO] running `"docker" "start" "-a" "863cdd36bd8d3fea4ec582d19424b27262c64c06f20de1e71020ff2c27765643"`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "863cdd36bd8d3fea4ec582d19424b27262c64c06f20de1e71020ff2c27765643"`
[INFO] running `"docker" "rm" "-f" "863cdd36bd8d3fea4ec582d19424b27262c64c06f20de1e71020ff2c27765643"`
[INFO] [stdout] 863cdd36bd8d3fea4ec582d19424b27262c64c06f20de1e71020ff2c27765643
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/vwxyzjn/hello_cargo:/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] 643ddb40dd25dc7bf53f292f26fad82a9e0baff2c047538e04914185c131f011
[INFO] running `"docker" "start" "-a" "643ddb40dd25dc7bf53f292f26fad82a9e0baff2c047538e04914185c131f011"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello_cargo-9365302d6c7b4b6c
[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" "643ddb40dd25dc7bf53f292f26fad82a9e0baff2c047538e04914185c131f011"`
[INFO] running `"docker" "rm" "-f" "643ddb40dd25dc7bf53f292f26fad82a9e0baff2c047538e04914185c131f011"`
[INFO] [stdout] 643ddb40dd25dc7bf53f292f26fad82a9e0baff2c047538e04914185c131f011