[INFO] updating cached repository matklad/jump-app
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/matklad/jump-app
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/jump-app" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/matklad/jump-app"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/matklad/jump-app'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/jump-app" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/matklad/jump-app"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/matklad/jump-app'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ac21dc04b388b37ef222565980347f4a358fe2a9
[INFO] sha for GitHub repo matklad/jump-app: ac21dc04b388b37ef222565980347f4a358fe2a9
[INFO] validating manifest of matklad/jump-app on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matklad/jump-app on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matklad/jump-app
[INFO] finished frobbing matklad/jump-app
[INFO] frobbed toml for matklad/jump-app written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/matklad/jump-app/Cargo.toml
[INFO] started frobbing matklad/jump-app
[INFO] finished frobbing matklad/jump-app
[INFO] frobbed toml for matklad/jump-app written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/matklad/jump-app/Cargo.toml
[INFO] crate matklad/jump-app already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking matklad/jump-app against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-7/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/matklad/jump-app:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b81ba40b951e2b4b9b09fa4bb04c66be430fd17df64018b726ff4e9197e1e1f2
[INFO] running `"docker" "start" "-a" "b81ba40b951e2b4b9b09fa4bb04c66be430fd17df64018b726ff4e9197e1e1f2"`
[INFO] [stderr]     Checking os_pipe v0.6.0
[INFO] [stderr]     Checking shared_child v0.3.2
[INFO] [stderr]     Checking duct v0.10.0
[INFO] [stderr]     Checking jump-app v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut prog = matches.values_of("prog").unwrap();
[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/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut prog = matches.values_of("prog").unwrap();
[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 2.76s
[INFO] running `"docker" "inspect" "b81ba40b951e2b4b9b09fa4bb04c66be430fd17df64018b726ff4e9197e1e1f2"`
[INFO] running `"docker" "rm" "-f" "b81ba40b951e2b4b9b09fa4bb04c66be430fd17df64018b726ff4e9197e1e1f2"`
[INFO] [stdout] b81ba40b951e2b4b9b09fa4bb04c66be430fd17df64018b726ff4e9197e1e1f2