[INFO] updating cached repository https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19489252d5d7b675fb202a92ea9aa20395addd31
[INFO] checking LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLooMaclin%2Freproduce_make_mut_inspection_bug_intellij_idea_rust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] finished tweaking git repo https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust
[INFO] tweaked toml for git repo https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/LooMaclin/reproduce_make_mut_inspection_bug_intellij_idea_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 282be640aef07a45eac2b9a9fd4437dd12ce33dc504c58c020140ec57452712a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "282be640aef07a45eac2b9a9fd4437dd12ce33dc504c58c020140ec57452712a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "282be640aef07a45eac2b9a9fd4437dd12ce33dc504c58c020140ec57452712a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "282be640aef07a45eac2b9a9fd4437dd12ce33dc504c58c020140ec57452712a", kill_on_drop: false }`
[INFO] [stdout] 282be640aef07a45eac2b9a9fd4437dd12ce33dc504c58c020140ec57452712a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9d567bd1dd7af3fde56a7ab0e3eab779c84029453a50ca957c509e591aac562
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e9d567bd1dd7af3fde56a7ab0e3eab779c84029453a50ca957c509e591aac562", kill_on_drop: false }`
[INFO] [stderr]     Checking reproduce_make_mut_inspection_bug_intellij_idea_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test((a,b): (String, String)) {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reproduce_make_mut_inspection_bug_intellij_idea_rust`.
[INFO] [stdout] error[E0596]: cannot borrow `a` as mutable, as it is not declared as mutable
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test((a,b): (String, String)) {
[INFO] [stdout]   |          - help: consider changing this to be mutable: `mut a`
[INFO] [stdout] 3 |     a.insert(0, 'b');
[INFO] [stdout]   |     ^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test((a,b): (String, String)) {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `a` as mutable, as it is not declared as mutable
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test((a,b): (String, String)) {
[INFO] [stdout]   |          - help: consider changing this to be mutable: `mut a`
[INFO] [stdout] 3 |     a.insert(0, 'b');
[INFO] [stdout]   |     ^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e9d567bd1dd7af3fde56a7ab0e3eab779c84029453a50ca957c509e591aac562", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9d567bd1dd7af3fde56a7ab0e3eab779c84029453a50ca957c509e591aac562", kill_on_drop: false }`
[INFO] [stdout] e9d567bd1dd7af3fde56a7ab0e3eab779c84029453a50ca957c509e591aac562