[INFO] updating cached repository gsas7q7o/rust-xp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gsas7q7o/rust-xp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gsas7q7o/rust-xp" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/gsas7q7o/rust-xp"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/gsas7q7o/rust-xp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gsas7q7o/rust-xp" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/gsas7q7o/rust-xp"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/gsas7q7o/rust-xp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 30c9aaf9335a9bd3a6cf5f1ed910e776b366639f
[INFO] sha for GitHub repo gsas7q7o/rust-xp: 30c9aaf9335a9bd3a6cf5f1ed910e776b366639f
[INFO] validating manifest of gsas7q7o/rust-xp on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gsas7q7o/rust-xp on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gsas7q7o/rust-xp
[INFO] finished frobbing gsas7q7o/rust-xp
[INFO] frobbed toml for gsas7q7o/rust-xp written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/gsas7q7o/rust-xp/Cargo.toml
[INFO] started frobbing gsas7q7o/rust-xp
[INFO] finished frobbing gsas7q7o/rust-xp
[INFO] frobbed toml for gsas7q7o/rust-xp written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/gsas7q7o/rust-xp/Cargo.toml
[INFO] crate gsas7q7o/rust-xp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gsas7q7o/rust-xp against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-1/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/gsas7q7o/rust-xp:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e7e8eb5c0abd6094235aa5a595a1322b81cd6a180184332117204c33efce0c33
[INFO] running `"docker" "start" "-a" "e7e8eb5c0abd6094235aa5a595a1322b81cd6a180184332117204c33efce0c33"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking xp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/xp.rs:167:25
[INFO] [stderr]     |
[INFO] [stderr] 167 |                     let mut km = k + m;
[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/xp.rs:167:25
[INFO] [stderr]     |
[INFO] [stderr] 167 |                     let mut km = k + m;
[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 1.74s
[INFO] running `"docker" "inspect" "e7e8eb5c0abd6094235aa5a595a1322b81cd6a180184332117204c33efce0c33"`
[INFO] running `"docker" "rm" "-f" "e7e8eb5c0abd6094235aa5a595a1322b81cd6a180184332117204c33efce0c33"`
[INFO] [stdout] e7e8eb5c0abd6094235aa5a595a1322b81cd6a180184332117204c33efce0c33