[INFO] updating cached repository phase/ler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/phase/ler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/phase/ler" "work/ex/beta-1.38-1/sources/1.37.0/gh/phase/ler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/phase/ler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/phase/ler" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phase/ler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phase/ler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] acab76cd4973021373b2d73d33904dbe0eda3b28
[INFO] sha for GitHub repo phase/ler: acab76cd4973021373b2d73d33904dbe0eda3b28
[INFO] validating manifest of phase/ler 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 phase/ler 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 phase/ler
[INFO] finished frobbing phase/ler
[INFO] frobbed toml for phase/ler written to work/ex/beta-1.38-1/sources/1.37.0/gh/phase/ler/Cargo.toml
[INFO] started frobbing phase/ler
[INFO] finished frobbing phase/ler
[INFO] frobbed toml for phase/ler written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phase/ler/Cargo.toml
[INFO] crate phase/ler 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 phase/ler 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-5/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/phase/ler:/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] cd29eb5c12e6319f3b330ea9444b21ed22d8d7c04f9d9da28d9e34059e419fe4
[INFO] running `"docker" "start" "-a" "cd29eb5c12e6319f3b330ea9444b21ed22d8d7c04f9d9da28d9e34059e419fe4"`
[INFO] [stderr]    Compiling unicode-width v0.1.3
[INFO] [stderr]    Compiling unicode-segmentation v0.1.2
[INFO] [stderr]    Compiling strsim v0.5.1
[INFO] [stderr]    Compiling term_size v0.2.1
[INFO] [stderr]    Compiling clap v2.13.0
[INFO] [stderr]    Compiling ler v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let matches = App::new("ler")
[INFO] [stderr]   |         ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.25s
[INFO] running `"docker" "inspect" "cd29eb5c12e6319f3b330ea9444b21ed22d8d7c04f9d9da28d9e34059e419fe4"`
[INFO] running `"docker" "rm" "-f" "cd29eb5c12e6319f3b330ea9444b21ed22d8d7c04f9d9da28d9e34059e419fe4"`
[INFO] [stdout] cd29eb5c12e6319f3b330ea9444b21ed22d8d7c04f9d9da28d9e34059e419fe4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/phase/ler:/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] a4a61f17811434a8d47da1c323115d576cdefcf4021001e3f37873a4cb6c08d4
[INFO] running `"docker" "start" "-a" "a4a61f17811434a8d47da1c323115d576cdefcf4021001e3f37873a4cb6c08d4"`
[INFO] [stderr]    Compiling ler v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let matches = App::new("ler")
[INFO] [stderr]   |         ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "a4a61f17811434a8d47da1c323115d576cdefcf4021001e3f37873a4cb6c08d4"`
[INFO] running `"docker" "rm" "-f" "a4a61f17811434a8d47da1c323115d576cdefcf4021001e3f37873a4cb6c08d4"`
[INFO] [stdout] a4a61f17811434a8d47da1c323115d576cdefcf4021001e3f37873a4cb6c08d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/phase/ler:/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] 9ce166d840c7430db21803228cc1c01f06aa72ae7ec3a9ee8c6d438d0cca5b72
[INFO] running `"docker" "start" "-a" "9ce166d840c7430db21803228cc1c01f06aa72ae7ec3a9ee8c6d438d0cca5b72"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ler-5117eb7799671bc7
[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" "9ce166d840c7430db21803228cc1c01f06aa72ae7ec3a9ee8c6d438d0cca5b72"`
[INFO] running `"docker" "rm" "-f" "9ce166d840c7430db21803228cc1c01f06aa72ae7ec3a9ee8c6d438d0cca5b72"`
[INFO] [stdout] 9ce166d840c7430db21803228cc1c01f06aa72ae7ec3a9ee8c6d438d0cca5b72