[INFO] updating cached repository ShinySaana/xterm256-converter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ShinySaana/xterm256-converter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ShinySaana/xterm256-converter" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ShinySaana/xterm256-converter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ShinySaana/xterm256-converter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ShinySaana/xterm256-converter" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ShinySaana/xterm256-converter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ShinySaana/xterm256-converter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 74c2998023f97440b7e2889c5e6dd0e09c7b6db3
[INFO] sha for GitHub repo ShinySaana/xterm256-converter: 74c2998023f97440b7e2889c5e6dd0e09c7b6db3
[INFO] validating manifest of ShinySaana/xterm256-converter on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ShinySaana/xterm256-converter on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ShinySaana/xterm256-converter
[INFO] finished frobbing ShinySaana/xterm256-converter
[INFO] frobbed toml for ShinySaana/xterm256-converter written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ShinySaana/xterm256-converter/Cargo.toml
[INFO] started frobbing ShinySaana/xterm256-converter
[INFO] finished frobbing ShinySaana/xterm256-converter
[INFO] frobbed toml for ShinySaana/xterm256-converter written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ShinySaana/xterm256-converter/Cargo.toml
[INFO] crate ShinySaana/xterm256-converter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ShinySaana/xterm256-converter against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ShinySaana/xterm256-converter:/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=forbid" "-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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cd1ed2653dbb3105c69e7a52dab055531eedf79376831576a0b0b02e70eb58d7
[INFO] running `"docker" "start" "-a" "cd1ed2653dbb3105c69e7a52dab055531eedf79376831576a0b0b02e70eb58d7"`
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.1
[INFO] [stderr]     Checking xterm256_converter v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 |             let mut transition = color_code_bg;
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 |             let mut transition = color_code_bg;
[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 14.61s
[INFO] running `"docker" "inspect" "cd1ed2653dbb3105c69e7a52dab055531eedf79376831576a0b0b02e70eb58d7"`
[INFO] running `"docker" "rm" "-f" "cd1ed2653dbb3105c69e7a52dab055531eedf79376831576a0b0b02e70eb58d7"`
[INFO] [stdout] cd1ed2653dbb3105c69e7a52dab055531eedf79376831576a0b0b02e70eb58d7