[INFO] updating cached repository jsyeo/sanity
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jsyeo/sanity
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jsyeo/sanity" "work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jsyeo/sanity" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jsyeo/sanity"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jsyeo/sanity'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f4594273962943d1b31ea9c8b89b3434193c2267
[INFO] sha for GitHub repo jsyeo/sanity: f4594273962943d1b31ea9c8b89b3434193c2267
[INFO] validating manifest of jsyeo/sanity 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 jsyeo/sanity 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 jsyeo/sanity
[INFO] finished frobbing jsyeo/sanity
[INFO] frobbed toml for jsyeo/sanity written to work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity/Cargo.toml
[INFO] started frobbing jsyeo/sanity
[INFO] finished frobbing jsyeo/sanity
[INFO] frobbed toml for jsyeo/sanity written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jsyeo/sanity/Cargo.toml
[INFO] crate jsyeo/sanity 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 jsyeo/sanity 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity:/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] 3345c997627bf1135021cb0741b5f880911c0fe73bbf99aed52d1fa010b1603d
[INFO] running `"docker" "start" "-a" "3345c997627bf1135021cb0741b5f880911c0fe73bbf99aed52d1fa010b1603d"`
[INFO] [stderr]    Compiling sanity v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     file.read_to_string(&mut s);
[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 1.07s
[INFO] running `"docker" "inspect" "3345c997627bf1135021cb0741b5f880911c0fe73bbf99aed52d1fa010b1603d"`
[INFO] running `"docker" "rm" "-f" "3345c997627bf1135021cb0741b5f880911c0fe73bbf99aed52d1fa010b1603d"`
[INFO] [stdout] 3345c997627bf1135021cb0741b5f880911c0fe73bbf99aed52d1fa010b1603d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity:/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] 51c4127a6d4fb824b5713e6fdcf4a5eff786032f807fe671b2babf70678fe49c
[INFO] running `"docker" "start" "-a" "51c4127a6d4fb824b5713e6fdcf4a5eff786032f807fe671b2babf70678fe49c"`
[INFO] [stderr]    Compiling sanity v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     file.read_to_string(&mut s);
[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 0.59s
[INFO] running `"docker" "inspect" "51c4127a6d4fb824b5713e6fdcf4a5eff786032f807fe671b2babf70678fe49c"`
[INFO] running `"docker" "rm" "-f" "51c4127a6d4fb824b5713e6fdcf4a5eff786032f807fe671b2babf70678fe49c"`
[INFO] [stdout] 51c4127a6d4fb824b5713e6fdcf4a5eff786032f807fe671b2babf70678fe49c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jsyeo/sanity:/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] cb6639fb848e9e7084eaa17d2eb2b84aad8b3d77426e6d4363b600292ee8ace1
[INFO] running `"docker" "start" "-a" "cb6639fb848e9e7084eaa17d2eb2b84aad8b3d77426e6d4363b600292ee8ace1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sanity-f204a4223c54078b
[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" "cb6639fb848e9e7084eaa17d2eb2b84aad8b3d77426e6d4363b600292ee8ace1"`
[INFO] running `"docker" "rm" "-f" "cb6639fb848e9e7084eaa17d2eb2b84aad8b3d77426e6d4363b600292ee8ace1"`
[INFO] [stdout] cb6639fb848e9e7084eaa17d2eb2b84aad8b3d77426e6d4363b600292ee8ace1