[INFO] updating cached repository learn-you-a-rust/shadowing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/learn-you-a-rust/shadowing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/shadowing" "work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/shadowing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/shadowing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/shadowing" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/shadowing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/shadowing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd63055c7259564aab3bf4e3c0289c4d8ae2c619
[INFO] sha for GitHub repo learn-you-a-rust/shadowing: bd63055c7259564aab3bf4e3c0289c4d8ae2c619
[INFO] validating manifest of learn-you-a-rust/shadowing 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 learn-you-a-rust/shadowing 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 learn-you-a-rust/shadowing
[INFO] finished frobbing learn-you-a-rust/shadowing
[INFO] frobbed toml for learn-you-a-rust/shadowing written to work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/shadowing/Cargo.toml
[INFO] started frobbing learn-you-a-rust/shadowing
[INFO] finished frobbing learn-you-a-rust/shadowing
[INFO] frobbed toml for learn-you-a-rust/shadowing written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/shadowing/Cargo.toml
[INFO] crate learn-you-a-rust/shadowing 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 learn-you-a-rust/shadowing 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/learn-you-a-rust/shadowing:/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] b7fcde7f7843461ed7fbfd966d122e90733da51d4acac6928f684a9cb4892f84
[INFO] running `"docker" "start" "-a" "b7fcde7f7843461ed7fbfd966d122e90733da51d4acac6928f684a9cb4892f84"`
[INFO] [stderr]    Compiling shadowing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `"docker" "inspect" "b7fcde7f7843461ed7fbfd966d122e90733da51d4acac6928f684a9cb4892f84"`
[INFO] running `"docker" "rm" "-f" "b7fcde7f7843461ed7fbfd966d122e90733da51d4acac6928f684a9cb4892f84"`
[INFO] [stdout] b7fcde7f7843461ed7fbfd966d122e90733da51d4acac6928f684a9cb4892f84
[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/learn-you-a-rust/shadowing:/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] 80db6d625a44135c08c3ca08e7ba58d8dc1306217673ab24e62ee1c0ce0f0477
[INFO] running `"docker" "start" "-a" "80db6d625a44135c08c3ca08e7ba58d8dc1306217673ab24e62ee1c0ce0f0477"`
[INFO] [stderr]    Compiling shadowing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "80db6d625a44135c08c3ca08e7ba58d8dc1306217673ab24e62ee1c0ce0f0477"`
[INFO] running `"docker" "rm" "-f" "80db6d625a44135c08c3ca08e7ba58d8dc1306217673ab24e62ee1c0ce0f0477"`
[INFO] [stdout] 80db6d625a44135c08c3ca08e7ba58d8dc1306217673ab24e62ee1c0ce0f0477
[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/learn-you-a-rust/shadowing:/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] 8a762b0b28944b277b17fb60e5d1f6eb22397a26cb14fe950a171fb27a156e79
[INFO] running `"docker" "start" "-a" "8a762b0b28944b277b17fb60e5d1f6eb22397a26cb14fe950a171fb27a156e79"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/shadowing-a5f5b87aace448a2
[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" "8a762b0b28944b277b17fb60e5d1f6eb22397a26cb14fe950a171fb27a156e79"`
[INFO] running `"docker" "rm" "-f" "8a762b0b28944b277b17fb60e5d1f6eb22397a26cb14fe950a171fb27a156e79"`
[INFO] [stdout] 8a762b0b28944b277b17fb60e5d1f6eb22397a26cb14fe950a171fb27a156e79