[INFO] cloning repository sepiropht/rust-error-handling
[INFO] running `"git" "clone" "--bare" "git://github.com/sepiropht/rust-error-handling.git" "work/cache/sources/gh/sepiropht/rust-error-handling"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/sepiropht/rust-error-handling'...
[INFO] running `"git" "clone" "work/cache/sources/gh/sepiropht/rust-error-handling" "work/ex/beta-1.37-6/sources/1.36.0/gh/sepiropht/rust-error-handling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sepiropht/rust-error-handling'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sepiropht/rust-error-handling" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 39f9a5a3cd92eb48ce7035bceb0e6c22d3adcae5
[INFO] sha for GitHub repo sepiropht/rust-error-handling: 39f9a5a3cd92eb48ce7035bceb0e6c22d3adcae5
[INFO] validating manifest of sepiropht/rust-error-handling 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 sepiropht/rust-error-handling 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 sepiropht/rust-error-handling
[INFO] finished frobbing sepiropht/rust-error-handling
[INFO] frobbed toml for sepiropht/rust-error-handling written to work/ex/beta-1.37-6/sources/1.36.0/gh/sepiropht/rust-error-handling/Cargo.toml
[INFO] started frobbing sepiropht/rust-error-handling
[INFO] finished frobbing sepiropht/rust-error-handling
[INFO] frobbed toml for sepiropht/rust-error-handling written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling/Cargo.toml
[INFO] crate sepiropht/rust-error-handling already has a lockfile, it will not be regenerated
[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 sepiropht/rust-error-handling against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 2f8090eb601a90b6c6d7853e55004d9fc9e3ddc49a02dbbe63d02019bdf6b31d
[INFO] running `"docker" "start" "-a" "2f8090eb601a90b6c6d7853e55004d9fc9e3ddc49a02dbbe63d02019bdf6b31d"`
[INFO] [stderr]    Compiling rust-error-handling v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "2f8090eb601a90b6c6d7853e55004d9fc9e3ddc49a02dbbe63d02019bdf6b31d"`
[INFO] running `"docker" "rm" "-f" "2f8090eb601a90b6c6d7853e55004d9fc9e3ddc49a02dbbe63d02019bdf6b31d"`
[INFO] [stdout] 2f8090eb601a90b6c6d7853e55004d9fc9e3ddc49a02dbbe63d02019bdf6b31d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 132db835f430c4ab2d984a9cd94055ee7eb5b1f5e0eddb64b2a9b65e3b2e81f6
[INFO] running `"docker" "start" "-a" "132db835f430c4ab2d984a9cd94055ee7eb5b1f5e0eddb64b2a9b65e3b2e81f6"`
[INFO] [stderr]    Compiling rust-error-handling v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "132db835f430c4ab2d984a9cd94055ee7eb5b1f5e0eddb64b2a9b65e3b2e81f6"`
[INFO] running `"docker" "rm" "-f" "132db835f430c4ab2d984a9cd94055ee7eb5b1f5e0eddb64b2a9b65e3b2e81f6"`
[INFO] [stdout] 132db835f430c4ab2d984a9cd94055ee7eb5b1f5e0eddb64b2a9b65e3b2e81f6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sepiropht/rust-error-handling:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e7b3794c2865708a6c55b8ce73eb0dce501bd58638c8251876f8c954166871ca
[INFO] running `"docker" "start" "-a" "e7b3794c2865708a6c55b8ce73eb0dce501bd58638c8251876f8c954166871ca"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_error_handling-02571d0215c6b378
[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" "e7b3794c2865708a6c55b8ce73eb0dce501bd58638c8251876f8c954166871ca"`
[INFO] running `"docker" "rm" "-f" "e7b3794c2865708a6c55b8ce73eb0dce501bd58638c8251876f8c954166871ca"`
[INFO] [stdout] e7b3794c2865708a6c55b8ce73eb0dce501bd58638c8251876f8c954166871ca