[INFO] updating cached repository fichtknick/livelog
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fichtknick/livelog
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fichtknick/livelog" "work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fichtknick/livelog" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fichtknick/livelog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fichtknick/livelog'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a2f180fafbbeb060bc580934ecd364d7ce860bdb
[INFO] sha for GitHub repo fichtknick/livelog: a2f180fafbbeb060bc580934ecd364d7ce860bdb
[INFO] validating manifest of fichtknick/livelog 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 fichtknick/livelog 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 fichtknick/livelog
[INFO] finished frobbing fichtknick/livelog
[INFO] frobbed toml for fichtknick/livelog written to work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog/Cargo.toml
[INFO] started frobbing fichtknick/livelog
[INFO] finished frobbing fichtknick/livelog
[INFO] frobbed toml for fichtknick/livelog written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fichtknick/livelog/Cargo.toml
[INFO] crate fichtknick/livelog 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 fichtknick/livelog 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog:/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] e57e7cb58b07912674b3c408a9f03d345a7fbd4ad08c247124e24d4da34d9b52
[INFO] running `"docker" "start" "-a" "e57e7cb58b07912674b3c408a9f03d345a7fbd4ad08c247124e24d4da34d9b52"`
[INFO] [stderr]    Compiling livelog v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut logfile = init_file(&env::args().nth(1));
[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 1.59s
[INFO] running `"docker" "inspect" "e57e7cb58b07912674b3c408a9f03d345a7fbd4ad08c247124e24d4da34d9b52"`
[INFO] running `"docker" "rm" "-f" "e57e7cb58b07912674b3c408a9f03d345a7fbd4ad08c247124e24d4da34d9b52"`
[INFO] [stdout] e57e7cb58b07912674b3c408a9f03d345a7fbd4ad08c247124e24d4da34d9b52
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog:/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] 23ada8c25d67f3b74ac2c26e3d2cfa8d787f45130652baa1a998ab0e751fee20
[INFO] running `"docker" "start" "-a" "23ada8c25d67f3b74ac2c26e3d2cfa8d787f45130652baa1a998ab0e751fee20"`
[INFO] [stderr]    Compiling livelog v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut logfile = init_file(&env::args().nth(1));
[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 0.93s
[INFO] running `"docker" "inspect" "23ada8c25d67f3b74ac2c26e3d2cfa8d787f45130652baa1a998ab0e751fee20"`
[INFO] running `"docker" "rm" "-f" "23ada8c25d67f3b74ac2c26e3d2cfa8d787f45130652baa1a998ab0e751fee20"`
[INFO] [stdout] 23ada8c25d67f3b74ac2c26e3d2cfa8d787f45130652baa1a998ab0e751fee20
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fichtknick/livelog:/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] 990f3f2b9f65c4c04940ed9561d66b512501fcf846680f376fdab492705c3e04
[INFO] running `"docker" "start" "-a" "990f3f2b9f65c4c04940ed9561d66b512501fcf846680f376fdab492705c3e04"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/livelog-3b199fa79802529d
[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" "990f3f2b9f65c4c04940ed9561d66b512501fcf846680f376fdab492705c3e04"`
[INFO] running `"docker" "rm" "-f" "990f3f2b9f65c4c04940ed9561d66b512501fcf846680f376fdab492705c3e04"`
[INFO] [stdout] 990f3f2b9f65c4c04940ed9561d66b512501fcf846680f376fdab492705c3e04