[INFO] updating cached repository honestold3/myrust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/honestold3/myrust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/honestold3/myrust" "work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/honestold3/myrust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/honestold3/myrust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/honestold3/myrust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0fe59864f1da527fe5d1755a22e98314609c03f4
[INFO] sha for GitHub repo honestold3/myrust: 0fe59864f1da527fe5d1755a22e98314609c03f4
[INFO] validating manifest of honestold3/myrust 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 honestold3/myrust 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 honestold3/myrust
[INFO] finished frobbing honestold3/myrust
[INFO] frobbed toml for honestold3/myrust written to work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust/Cargo.toml
[INFO] started frobbing honestold3/myrust
[INFO] finished frobbing honestold3/myrust
[INFO] frobbed toml for honestold3/myrust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/honestold3/myrust/Cargo.toml
[INFO] crate honestold3/myrust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing honestold3/myrust 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust:/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] 9d1c338229cfcdadf51c401d3612579995d3b7c624416536ff8dad261af0ddce
[INFO] running `"docker" "start" "-a" "9d1c338229cfcdadf51c401d3612579995d3b7c624416536ff8dad261af0ddce"`
[INFO] [stderr]    Compiling myrust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = "dddd";
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s1 = String::from("eeee");
[INFO] [stderr]   |         ^^ help: consider prefixing with an underscore: `_s1`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "9d1c338229cfcdadf51c401d3612579995d3b7c624416536ff8dad261af0ddce"`
[INFO] running `"docker" "rm" "-f" "9d1c338229cfcdadf51c401d3612579995d3b7c624416536ff8dad261af0ddce"`
[INFO] [stdout] 9d1c338229cfcdadf51c401d3612579995d3b7c624416536ff8dad261af0ddce
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust:/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] c57471c7b4308b50a006447f4525aa26f87b833ea13b8f3a82ec4f42cf50dd54
[INFO] running `"docker" "start" "-a" "c57471c7b4308b50a006447f4525aa26f87b833ea13b8f3a82ec4f42cf50dd54"`
[INFO] [stderr]    Compiling myrust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = "dddd";
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s1 = String::from("eeee");
[INFO] [stderr]   |         ^^ help: consider prefixing with an underscore: `_s1`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "c57471c7b4308b50a006447f4525aa26f87b833ea13b8f3a82ec4f42cf50dd54"`
[INFO] running `"docker" "rm" "-f" "c57471c7b4308b50a006447f4525aa26f87b833ea13b8f3a82ec4f42cf50dd54"`
[INFO] [stdout] c57471c7b4308b50a006447f4525aa26f87b833ea13b8f3a82ec4f42cf50dd54
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/honestold3/myrust:/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] 1d72bdc4c7a8324a28443843a6259988a95ab7417ea4a80a1a4a60b6c7d8f290
[INFO] running `"docker" "start" "-a" "1d72bdc4c7a8324a28443843a6259988a95ab7417ea4a80a1a4a60b6c7d8f290"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/myrust-c04d22acc2d37d62
[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" "1d72bdc4c7a8324a28443843a6259988a95ab7417ea4a80a1a4a60b6c7d8f290"`
[INFO] running `"docker" "rm" "-f" "1d72bdc4c7a8324a28443843a6259988a95ab7417ea4a80a1a4a60b6c7d8f290"`
[INFO] [stdout] 1d72bdc4c7a8324a28443843a6259988a95ab7417ea4a80a1a4a60b6c7d8f290