[INFO] updating cached repository selaux/ruinfuck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/selaux/ruinfuck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/selaux/ruinfuck" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/selaux/ruinfuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/selaux/ruinfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/selaux/ruinfuck" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/selaux/ruinfuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/selaux/ruinfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0eae852f7b3cd342f7ca02b211db5764059bd3b
[INFO] sha for GitHub repo selaux/ruinfuck: b0eae852f7b3cd342f7ca02b211db5764059bd3b
[INFO] validating manifest of selaux/ruinfuck on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of selaux/ruinfuck on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing selaux/ruinfuck
[INFO] finished frobbing selaux/ruinfuck
[INFO] frobbed toml for selaux/ruinfuck written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/selaux/ruinfuck/Cargo.toml
[INFO] started frobbing selaux/ruinfuck
[INFO] finished frobbing selaux/ruinfuck
[INFO] frobbed toml for selaux/ruinfuck written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/selaux/ruinfuck/Cargo.toml
[INFO] crate selaux/ruinfuck already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking selaux/ruinfuck against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-3/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/selaux/ruinfuck:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7384100f03ad0deeda225c9a704ad68951e4759efe0b601b4d96f5073778ce09
[INFO] running `"docker" "start" "-a" "7384100f03ad0deeda225c9a704ad68951e4759efe0b601b4d96f5073778ce09"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking ruinfuck v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:129:21
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let mut v = &mut s.cells[pos];
[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/vm.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut v = &mut s.cells[pos];
[INFO] [stderr]     |                     ----^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:149:21
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 let mut into = &mut s.cells[into_pos];
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:129:21
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let mut v = &mut s.cells[pos];
[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/vm.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut v = &mut s.cells[pos];
[INFO] [stderr]     |                     ----^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:149:21
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 let mut into = &mut s.cells[into_pos];
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.79s
[INFO] running `"docker" "inspect" "7384100f03ad0deeda225c9a704ad68951e4759efe0b601b4d96f5073778ce09"`
[INFO] running `"docker" "rm" "-f" "7384100f03ad0deeda225c9a704ad68951e4759efe0b601b4d96f5073778ce09"`
[INFO] [stdout] 7384100f03ad0deeda225c9a704ad68951e4759efe0b601b4d96f5073778ce09