[INFO] updating cached repository hjr3/rust-utils
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hjr3/rust-utils
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hjr3/rust-utils" "work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hjr3/rust-utils" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hjr3/rust-utils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hjr3/rust-utils'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3d262eadbfaba6275520f6675243561eea38f3c9
[INFO] sha for GitHub repo hjr3/rust-utils: 3d262eadbfaba6275520f6675243561eea38f3c9
[INFO] validating manifest of hjr3/rust-utils 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 hjr3/rust-utils 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 hjr3/rust-utils
[INFO] finished frobbing hjr3/rust-utils
[INFO] frobbed toml for hjr3/rust-utils written to work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils/Cargo.toml
[INFO] started frobbing hjr3/rust-utils
[INFO] finished frobbing hjr3/rust-utils
[INFO] frobbed toml for hjr3/rust-utils written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hjr3/rust-utils/Cargo.toml
[INFO] crate hjr3/rust-utils 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 hjr3/rust-utils 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils:/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] 4a33c8a289ba359c087c2c1c23ee413ad53047563be4c6f0354d6e74e363438f
[INFO] running `"docker" "start" "-a" "4a33c8a289ba359c087c2c1c23ee413ad53047563be4c6f0354d6e74e363438f"`
[INFO] [stderr]    Compiling rnd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rnd/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut stdin = stdin();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/shf/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut stdin = stdin();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "4a33c8a289ba359c087c2c1c23ee413ad53047563be4c6f0354d6e74e363438f"`
[INFO] running `"docker" "rm" "-f" "4a33c8a289ba359c087c2c1c23ee413ad53047563be4c6f0354d6e74e363438f"`
[INFO] [stdout] 4a33c8a289ba359c087c2c1c23ee413ad53047563be4c6f0354d6e74e363438f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils:/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] 40c0614ec3b1aff56280a0006c6f2d2c4927784b6f6ea3f22d03ead886021f66
[INFO] running `"docker" "start" "-a" "40c0614ec3b1aff56280a0006c6f2d2c4927784b6f6ea3f22d03ead886021f66"`
[INFO] [stderr]    Compiling rnd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rnd/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut stdin = stdin();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/shf/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut stdin = stdin();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "40c0614ec3b1aff56280a0006c6f2d2c4927784b6f6ea3f22d03ead886021f66"`
[INFO] running `"docker" "rm" "-f" "40c0614ec3b1aff56280a0006c6f2d2c4927784b6f6ea3f22d03ead886021f66"`
[INFO] [stdout] 40c0614ec3b1aff56280a0006c6f2d2c4927784b6f6ea3f22d03ead886021f66
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hjr3/rust-utils:/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] 117970802dd97b372ff8618ab090f676d27b3efb0a1e96604af61bf91c548b98
[INFO] running `"docker" "start" "-a" "117970802dd97b372ff8618ab090f676d27b3efb0a1e96604af61bf91c548b98"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rnd-9bf1c18292f734e7
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/shf-d22a3c8fa6c3c706
[INFO] running `"docker" "inspect" "117970802dd97b372ff8618ab090f676d27b3efb0a1e96604af61bf91c548b98"`
[INFO] running `"docker" "rm" "-f" "117970802dd97b372ff8618ab090f676d27b3efb0a1e96604af61bf91c548b98"`
[INFO] [stdout] 117970802dd97b372ff8618ab090f676d27b3efb0a1e96604af61bf91c548b98