[INFO] crate term_rewriting 0.5.0 is already in cache
[INFO] extracting crate term_rewriting 0.5.0 into work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/term_rewriting/0.5.0
[INFO] extracting crate term_rewriting 0.5.0 into work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/term_rewriting/0.5.0
[INFO] validating manifest of term_rewriting-0.5.0 on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of term_rewriting-0.5.0 on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing term_rewriting-0.5.0
[INFO] finished frobbing term_rewriting-0.5.0
[INFO] frobbed toml for term_rewriting-0.5.0 written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/term_rewriting/0.5.0/Cargo.toml
[INFO] started frobbing term_rewriting-0.5.0
[INFO] finished frobbing term_rewriting-0.5.0
[INFO] frobbed toml for term_rewriting-0.5.0 written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/term_rewriting/0.5.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking term_rewriting-0.5.0 against master#1891bfa80364eead426517c68de6947b7692e2de for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-4/master#1891bfa80364eead426517c68de6947b7692e2de:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/term_rewriting/0.5.0:/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" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] afd6aacec5ad44170296ff9ba9a1bab7de2b4753655218e8b60e22162b9224c5
[INFO] running `"docker" "start" "-a" "afd6aacec5ad44170296ff9ba9a1bab7de2b4753655218e8b60e22162b9224c5"`
[INFO] [stderr]     Checking term_rewriting v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/types/term.rs:1111:21
[INFO] [stderr]      |
[INFO] [stderr] 1111 |                 let mut cs = Term::constraint_substitute(&cs, &st);
[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/types/term.rs:1119:21
[INFO] [stderr]      |
[INFO] [stderr] 1119 |                 let mut cs = Term::constraint_substitute(&cs, &ts);
[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/types/term.rs:1111:21
[INFO] [stderr]      |
[INFO] [stderr] 1111 |                 let mut cs = Term::constraint_substitute(&cs, &st);
[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/types/term.rs:1119:21
[INFO] [stderr]      |
[INFO] [stderr] 1119 |                 let mut cs = Term::constraint_substitute(&cs, &ts);
[INFO] [stderr]      |                     ----^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
[INFO] running `"docker" "inspect" "afd6aacec5ad44170296ff9ba9a1bab7de2b4753655218e8b60e22162b9224c5"`
[INFO] running `"docker" "rm" "-f" "afd6aacec5ad44170296ff9ba9a1bab7de2b4753655218e8b60e22162b9224c5"`
[INFO] [stdout] afd6aacec5ad44170296ff9ba9a1bab7de2b4753655218e8b60e22162b9224c5