[INFO] updating cached repository martinhath/nail
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/martinhath/nail
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/martinhath/nail" "work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/martinhath/nail" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/martinhath/nail"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/martinhath/nail'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b579644b4a549c4820b7d6794a972b5cb379f982
[INFO] sha for GitHub repo martinhath/nail: b579644b4a549c4820b7d6794a972b5cb379f982
[INFO] validating manifest of martinhath/nail on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of martinhath/nail on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing martinhath/nail
[INFO] finished frobbing martinhath/nail
[INFO] frobbed toml for martinhath/nail written to work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail/Cargo.toml
[INFO] started frobbing martinhath/nail
[INFO] finished frobbing martinhath/nail
[INFO] frobbed toml for martinhath/nail written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/martinhath/nail/Cargo.toml
[INFO] crate martinhath/nail already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing martinhath/nail against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 39721aca4ef35942ff5dde3cc9cdae14e12563732a2e4056427a64becfd2c3d4
[INFO] running `"docker" "start" "-a" "39721aca4ef35942ff5dde3cc9cdae14e12563732a2e4056427a64becfd2c3d4"`
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling nail v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:264:25
[INFO] [stderr]     |
[INFO] [stderr] 264 |                     let mut p = image.get_pixel_mut(x as u32, y as u32);
[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 29.97s
[INFO] running `"docker" "inspect" "39721aca4ef35942ff5dde3cc9cdae14e12563732a2e4056427a64becfd2c3d4"`
[INFO] running `"docker" "rm" "-f" "39721aca4ef35942ff5dde3cc9cdae14e12563732a2e4056427a64becfd2c3d4"`
[INFO] [stdout] 39721aca4ef35942ff5dde3cc9cdae14e12563732a2e4056427a64becfd2c3d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e52a516e2902173fecf6ad2e4077c87f2e98f36a9802fde41de68bc3e6099c7e
[INFO] running `"docker" "start" "-a" "e52a516e2902173fecf6ad2e4077c87f2e98f36a9802fde41de68bc3e6099c7e"`
[INFO] [stderr]    Compiling nail v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:264:25
[INFO] [stderr]     |
[INFO] [stderr] 264 |                     let mut p = image.get_pixel_mut(x as u32, y as u32);
[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 1.34s
[INFO] running `"docker" "inspect" "e52a516e2902173fecf6ad2e4077c87f2e98f36a9802fde41de68bc3e6099c7e"`
[INFO] running `"docker" "rm" "-f" "e52a516e2902173fecf6ad2e4077c87f2e98f36a9802fde41de68bc3e6099c7e"`
[INFO] [stdout] e52a516e2902173fecf6ad2e4077c87f2e98f36a9802fde41de68bc3e6099c7e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/martinhath/nail:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 08ac2c3ece0a5e70f1c29c5ad422429d93359592621fa889204bc7a4b533bbb8
[INFO] running `"docker" "start" "-a" "08ac2c3ece0a5e70f1c29c5ad422429d93359592621fa889204bc7a4b533bbb8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/nail-55171a7e86e1d539
[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" "08ac2c3ece0a5e70f1c29c5ad422429d93359592621fa889204bc7a4b533bbb8"`
[INFO] running `"docker" "rm" "-f" "08ac2c3ece0a5e70f1c29c5ad422429d93359592621fa889204bc7a4b533bbb8"`
[INFO] [stdout] 08ac2c3ece0a5e70f1c29c5ad422429d93359592621fa889204bc7a4b533bbb8