[INFO] updating cached repository LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 19489252d5d7b675fb202a92ea9aa20395addd31
[INFO] sha for GitHub repo LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust: 19489252d5d7b675fb202a92ea9aa20395addd31
[INFO] validating manifest of LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] finished frobbing LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] frobbed toml for LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust/Cargo.toml
[INFO] started frobbing LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] finished frobbing LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] frobbed toml for LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust/Cargo.toml
[INFO] crate LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-4/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust:/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 46a9e3b282b0262ce32cbcb8daa1c31823f4fc0467352d523dc99bd639edade3
[INFO] running `"docker" "start" "-a" "46a9e3b282b0262ce32cbcb8daa1c31823f4fc0467352d523dc99bd639edade3"`
[INFO] [stderr]     Checking reproduce_make_mut_inspection_bug_intellij_idea_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn test((a,b): (String, String)) {
[INFO] [stderr]   |            ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `a` as mutable, as it is not declared as mutable
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn test((a,b): (String, String)) {
[INFO] [stderr]   |          - help: consider changing this to be mutable: `mut a`
[INFO] [stderr] 3 |     a.insert(0, 'b');
[INFO] [stderr]   |     ^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: Could not compile `reproduce_make_mut_inspection_bug_intellij_idea_rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn test((a,b): (String, String)) {
[INFO] [stderr]   |            ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `a` as mutable, as it is not declared as mutable
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn test((a,b): (String, String)) {
[INFO] [stderr]   |          - help: consider changing this to be mutable: `mut a`
[INFO] [stderr] 3 |     a.insert(0, 'b');
[INFO] [stderr]   |     ^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: Could not compile `reproduce_make_mut_inspection_bug_intellij_idea_rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "46a9e3b282b0262ce32cbcb8daa1c31823f4fc0467352d523dc99bd639edade3"`
[INFO] running `"docker" "rm" "-f" "46a9e3b282b0262ce32cbcb8daa1c31823f4fc0467352d523dc99bd639edade3"`
[INFO] [stdout] 46a9e3b282b0262ce32cbcb8daa1c31823f4fc0467352d523dc99bd639edade3