[INFO] crate pista 0.1.1 is already in cache
[INFO] extracting crate pista 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/pista/0.1.1
[INFO] extracting crate pista 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pista/0.1.1
[INFO] validating manifest of pista-0.1.1 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 pista-0.1.1 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 pista-0.1.1
[INFO] finished frobbing pista-0.1.1
[INFO] frobbed toml for pista-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/pista/0.1.1/Cargo.toml
[INFO] started frobbing pista-0.1.1
[INFO] finished frobbing pista-0.1.1
[INFO] frobbed toml for pista-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pista/0.1.1/Cargo.toml
[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 pista-0.1.1 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-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pista/0.1.1:/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] d6d43f3ae8628535b8e075098ac0140c8a5e4c47f966a6c2b7cbc1485562b894
[INFO] running `"docker" "start" "-a" "d6d43f3ae8628535b8e075098ac0140c8a5e4c47f966a6c2b7cbc1485562b894"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling tico v1.0.0
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling pista v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vcs.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut branch;
[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 40.93s
[INFO] running `"docker" "inspect" "d6d43f3ae8628535b8e075098ac0140c8a5e4c47f966a6c2b7cbc1485562b894"`
[INFO] running `"docker" "rm" "-f" "d6d43f3ae8628535b8e075098ac0140c8a5e4c47f966a6c2b7cbc1485562b894"`
[INFO] [stdout] d6d43f3ae8628535b8e075098ac0140c8a5e4c47f966a6c2b7cbc1485562b894
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pista/0.1.1:/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] 45364cced11cf161e8ccc58290e443145686a901bb56c789206259e586c3b10d
[INFO] running `"docker" "start" "-a" "45364cced11cf161e8ccc58290e443145686a901bb56c789206259e586c3b10d"`
[INFO] [stderr]    Compiling pista v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vcs.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut branch;
[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 1.08s
[INFO] running `"docker" "inspect" "45364cced11cf161e8ccc58290e443145686a901bb56c789206259e586c3b10d"`
[INFO] running `"docker" "rm" "-f" "45364cced11cf161e8ccc58290e443145686a901bb56c789206259e586c3b10d"`
[INFO] [stdout] 45364cced11cf161e8ccc58290e443145686a901bb56c789206259e586c3b10d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pista/0.1.1:/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] 5a61f71799410b223cca8e3ee2a01b12be894504782ec86d049a360b89cc6a96
[INFO] running `"docker" "start" "-a" "5a61f71799410b223cca8e3ee2a01b12be894504782ec86d049a360b89cc6a96"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pista-8489dadb6c6074e0
[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" "5a61f71799410b223cca8e3ee2a01b12be894504782ec86d049a360b89cc6a96"`
[INFO] running `"docker" "rm" "-f" "5a61f71799410b223cca8e3ee2a01b12be894504782ec86d049a360b89cc6a96"`
[INFO] [stdout] 5a61f71799410b223cca8e3ee2a01b12be894504782ec86d049a360b89cc6a96