[INFO] updating cached repository andrewnester/rust-jsonm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andrewnester/rust-jsonm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andrewnester/rust-jsonm" "work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/gh/andrewnester/rust-jsonm"`
[INFO] [stderr] Cloning into 'work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/gh/andrewnester/rust-jsonm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andrewnester/rust-jsonm" "work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/gh/andrewnester/rust-jsonm"`
[INFO] [stderr] Cloning into 'work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/gh/andrewnester/rust-jsonm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1da554fb05b298bc629474e1165d89d0c024021c
[INFO] sha for GitHub repo andrewnester/rust-jsonm: 1da554fb05b298bc629474e1165d89d0c024021c
[INFO] validating manifest of andrewnester/rust-jsonm on toolchain master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andrewnester/rust-jsonm on toolchain try#097e26225c5cc28d3042ad4c80eac7c488f78ee7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing andrewnester/rust-jsonm
[INFO] finished frobbing andrewnester/rust-jsonm
[INFO] frobbed toml for andrewnester/rust-jsonm written to work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/gh/andrewnester/rust-jsonm/Cargo.toml
[INFO] started frobbing andrewnester/rust-jsonm
[INFO] finished frobbing andrewnester/rust-jsonm
[INFO] frobbed toml for andrewnester/rust-jsonm written to work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/gh/andrewnester/rust-jsonm/Cargo.toml
[INFO] crate andrewnester/rust-jsonm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking andrewnester/rust-jsonm against master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4 for pr-60932
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60932/worker-7/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/gh/andrewnester/rust-jsonm:/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" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 546c847459ca19b0d836a6978a5d804156621aa8e424091d3f97a878548654e2
[INFO] running `"docker" "start" "-a" "546c847459ca19b0d836a6978a5d804156621aa8e424091d3f97a878548654e2"`
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking jsonm v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/packer.rs:123:24
[INFO] [stderr]     |
[INFO] [stderr] 123 |                     Ok(mut result) => result,
[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/packer.rs:123:24
[INFO] [stderr]     |
[INFO] [stderr] 123 |                     Ok(mut result) => result,
[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 6.84s
[INFO] running `"docker" "inspect" "546c847459ca19b0d836a6978a5d804156621aa8e424091d3f97a878548654e2"`
[INFO] running `"docker" "rm" "-f" "546c847459ca19b0d836a6978a5d804156621aa8e424091d3f97a878548654e2"`
[INFO] [stdout] 546c847459ca19b0d836a6978a5d804156621aa8e424091d3f97a878548654e2