[INFO] updating cached repository mgrabmueller/med
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mgrabmueller/med
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mgrabmueller/med" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/mgrabmueller/med"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/mgrabmueller/med'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mgrabmueller/med" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/mgrabmueller/med"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/mgrabmueller/med'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eea892b4e510feaa621765d7c2bfa16f7c4ee523
[INFO] sha for GitHub repo mgrabmueller/med: eea892b4e510feaa621765d7c2bfa16f7c4ee523
[INFO] validating manifest of mgrabmueller/med 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 mgrabmueller/med 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 mgrabmueller/med
[INFO] finished frobbing mgrabmueller/med
[INFO] frobbed toml for mgrabmueller/med written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/mgrabmueller/med/Cargo.toml
[INFO] started frobbing mgrabmueller/med
[INFO] finished frobbing mgrabmueller/med
[INFO] frobbed toml for mgrabmueller/med written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/mgrabmueller/med/Cargo.toml
[INFO] crate mgrabmueller/med 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mgrabmueller/med against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-0/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/mgrabmueller/med:/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] 7e133b545d719d4b6a0007de142b492606696baf32ba5a55880a3d4fab02f0fa
[INFO] running `"docker" "start" "-a" "7e133b545d719d4b6a0007de142b492606696baf32ba5a55880a3d4fab02f0fa"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Checking med v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/main.rs:1058:13
[INFO] [stderr]      |
[INFO] [stderr] 1058 |         let mut f = BufReader::new(File::open(fname)?);
[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:1058:13
[INFO] [stderr]      |
[INFO] [stderr] 1058 |         let mut f = BufReader::new(File::open(fname)?);
[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:1671:13
[INFO] [stderr]      |
[INFO] [stderr] 1671 |         let mut last_cmd = Some(c);
[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/main.rs:1671:13
[INFO] [stderr]      |
[INFO] [stderr] 1671 |         let mut last_cmd = Some(c);
[INFO] [stderr]      |             ----^^^^^^^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "7e133b545d719d4b6a0007de142b492606696baf32ba5a55880a3d4fab02f0fa"`
[INFO] running `"docker" "rm" "-f" "7e133b545d719d4b6a0007de142b492606696baf32ba5a55880a3d4fab02f0fa"`
[INFO] [stdout] 7e133b545d719d4b6a0007de142b492606696baf32ba5a55880a3d4fab02f0fa