[INFO] fetching crate barfs 0.1.2...
[INFO] testing barfs-0.1.2 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate barfs 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate barfs 0.1.2
[INFO] finished tweaking crates.io crate barfs 0.1.2
[INFO] tweaked toml for crates.io crate barfs 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate barfs 0.1.2 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate barfs 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97ea828dc448c7e4ad3352e427d0b4d076e4ba06eeca77ef1ae530ef50e051d3
[INFO] running `Command { std: "docker" "start" "-a" "97ea828dc448c7e4ad3352e427d0b4d076e4ba06eeca77ef1ae530ef50e051d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97ea828dc448c7e4ad3352e427d0b4d076e4ba06eeca77ef1ae530ef50e051d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ea828dc448c7e4ad3352e427d0b4d076e4ba06eeca77ef1ae530ef50e051d3", kill_on_drop: false }`
[INFO] [stdout] 97ea828dc448c7e4ad3352e427d0b4d076e4ba06eeca77ef1ae530ef50e051d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f34c96fa2d4a84ed23ce57e1e4fc3f0525389d186e7bd4216700ebd249c7f155
[INFO] running `Command { std: "docker" "start" "-a" "f34c96fa2d4a84ed23ce57e1e4fc3f0525389d186e7bd4216700ebd249c7f155", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-isle v0.89.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.89.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling target-lexicon v0.12.4
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling cranelift-entity v0.89.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling slice-group-by v0.3.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling bumpalo v3.11.1
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.89.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling cranelift-bforest v0.89.1
[INFO] [stderr]    Compiling regalloc2 v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling cranelift-codegen v0.89.1
[INFO] [stderr]    Compiling cranelift-frontend v0.89.1
[INFO] [stderr]    Compiling cranelift-module v0.89.1
[INFO] [stderr]    Compiling cranelift-native v0.89.1
[INFO] [stderr]    Compiling cranelift v0.89.1
[INFO] [stderr]    Compiling cranelift-jit v0.89.1
[INFO] [stderr]    Compiling barfs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.72s
[INFO] running `Command { std: "docker" "inspect" "f34c96fa2d4a84ed23ce57e1e4fc3f0525389d186e7bd4216700ebd249c7f155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34c96fa2d4a84ed23ce57e1e4fc3f0525389d186e7bd4216700ebd249c7f155", kill_on_drop: false }`
[INFO] [stdout] f34c96fa2d4a84ed23ce57e1e4fc3f0525389d186e7bd4216700ebd249c7f155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6afa1013dfc16c80f2d4cd6125eb7de4e38021ec763e97012fec042d41b34d59
[INFO] running `Command { std: "docker" "start" "-a" "6afa1013dfc16c80f2d4cd6125eb7de4e38021ec763e97012fec042d41b34d59", kill_on_drop: false }`
[INFO] [stderr]    Compiling barfs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "6afa1013dfc16c80f2d4cd6125eb7de4e38021ec763e97012fec042d41b34d59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6afa1013dfc16c80f2d4cd6125eb7de4e38021ec763e97012fec042d41b34d59", kill_on_drop: false }`
[INFO] [stdout] 6afa1013dfc16c80f2d4cd6125eb7de4e38021ec763e97012fec042d41b34d59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 024cce081663c6388143029da53d330d6c1fb911718fc4e79c0f8775015b3941
[INFO] running `Command { std: "docker" "start" "-a" "024cce081663c6388143029da53d330d6c1fb911718fc4e79c0f8775015b3941", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] 
[INFO] [stderr]    --> src/cfg.rs:138:7
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `barfs` (bin "barfs" test) generated 1 warning (run `cargo fix --bin "barfs" -p barfs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/barfs-147e4470bf0fcb10)
[INFO] running `Command { std: "docker" "inspect" "024cce081663c6388143029da53d330d6c1fb911718fc4e79c0f8775015b3941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "024cce081663c6388143029da53d330d6c1fb911718fc4e79c0f8775015b3941", kill_on_drop: false }`
[INFO] [stdout] 024cce081663c6388143029da53d330d6c1fb911718fc4e79c0f8775015b3941