[INFO] updating cached repository KeeganMyers/mshell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KeeganMyers/mshell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KeeganMyers/mshell" "work/ex/beta-1.38-1/sources/1.37.0/gh/KeeganMyers/mshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/KeeganMyers/mshell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KeeganMyers/mshell" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 32861b45ccac1ac0752bd2645ca67bae8adc9bbc
[INFO] sha for GitHub repo KeeganMyers/mshell: 32861b45ccac1ac0752bd2645ca67bae8adc9bbc
[INFO] validating manifest of KeeganMyers/mshell 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 KeeganMyers/mshell 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 KeeganMyers/mshell
[INFO] finished frobbing KeeganMyers/mshell
[INFO] frobbed toml for KeeganMyers/mshell written to work/ex/beta-1.38-1/sources/1.37.0/gh/KeeganMyers/mshell/Cargo.toml
[INFO] started frobbing KeeganMyers/mshell
[INFO] finished frobbing KeeganMyers/mshell
[INFO] frobbed toml for KeeganMyers/mshell written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell/Cargo.toml
[INFO] crate KeeganMyers/mshell 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 KeeganMyers/mshell against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] f0005e13737d6a4d13850a200cbf3b7e5576308dad6fff5090611c47e7aa0664
[INFO] running `"docker" "start" "-a" "f0005e13737d6a4d13850a200cbf3b7e5576308dad6fff5090611c47e7aa0664"`
[INFO] [stderr]    Compiling dirs-sys v0.3.3
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling dirs v2.0.1
[INFO] [stderr]    Compiling rustyline v5.0.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling mshell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 |             final_command.wait();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.73s
[INFO] running `"docker" "inspect" "f0005e13737d6a4d13850a200cbf3b7e5576308dad6fff5090611c47e7aa0664"`
[INFO] running `"docker" "rm" "-f" "f0005e13737d6a4d13850a200cbf3b7e5576308dad6fff5090611c47e7aa0664"`
[INFO] [stdout] f0005e13737d6a4d13850a200cbf3b7e5576308dad6fff5090611c47e7aa0664
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0b82cd6c6d35f024c0da4cc0b8f63a9d828dbe15d0589594914334e740fea59b
[INFO] running `"docker" "start" "-a" "0b82cd6c6d35f024c0da4cc0b8f63a9d828dbe15d0589594914334e740fea59b"`
[INFO] [stderr]    Compiling mshell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 |             final_command.wait();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "0b82cd6c6d35f024c0da4cc0b8f63a9d828dbe15d0589594914334e740fea59b"`
[INFO] running `"docker" "rm" "-f" "0b82cd6c6d35f024c0da4cc0b8f63a9d828dbe15d0589594914334e740fea59b"`
[INFO] [stdout] 0b82cd6c6d35f024c0da4cc0b8f63a9d828dbe15d0589594914334e740fea59b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KeeganMyers/mshell:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 11e5297df7eae6ddab50227d9d2a2d7cd5278925b446e57638958a0ebd4860ee
[INFO] running `"docker" "start" "-a" "11e5297df7eae6ddab50227d9d2a2d7cd5278925b446e57638958a0ebd4860ee"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mshell-bf1665d4eb487216
[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" "11e5297df7eae6ddab50227d9d2a2d7cd5278925b446e57638958a0ebd4860ee"`
[INFO] running `"docker" "rm" "-f" "11e5297df7eae6ddab50227d9d2a2d7cd5278925b446e57638958a0ebd4860ee"`
[INFO] [stdout] 11e5297df7eae6ddab50227d9d2a2d7cd5278925b446e57638958a0ebd4860ee