[INFO] cloning repository https://github.com/vtramo/rust-model-checking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vtramo/rust-model-checking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvtramo%2Frust-model-checking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvtramo%2Frust-model-checking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7390873fbe7d1a75fcf80a6f6a78cacd635958f9
[INFO] checking vtramo/rust-model-checking against try#b8ee37b59c6e1f39bae18b85e057975ab0d89308 for pr-139587-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvtramo%2Frust-model-checking" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vtramo/rust-model-checking on toolchain b8ee37b59c6e1f39bae18b85e057975ab0d89308
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vtramo/rust-model-checking
[INFO] finished tweaking git repo https://github.com/vtramo/rust-model-checking
[INFO] tweaked toml for git repo https://github.com/vtramo/rust-model-checking written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vtramo/rust-model-checking 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" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a5248701b14e67354c254585f312297d9395111956ea80d63876f4e4b579dbe
[INFO] running `Command { std: "docker" "start" "-a" "3a5248701b14e67354c254585f312297d9395111956ea80d63876f4e4b579dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a5248701b14e67354c254585f312297d9395111956ea80d63876f4e4b579dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a5248701b14e67354c254585f312297d9395111956ea80d63876f4e4b579dbe", kill_on_drop: false }`
[INFO] [stdout] 3a5248701b14e67354c254585f312297d9395111956ea80d63876f4e4b579dbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+b8ee37b59c6e1f39bae18b85e057975ab0d89308" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cb24aae79f80b937c072e63ca8b90f2bb8d87dbb21d2460fe87595e1f2c91cb
[INFO] running `Command { std: "docker" "start" "-a" "2cb24aae79f80b937c072e63ca8b90f2bb8d87dbb21d2460fe87595e1f2c91cb", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-model-checking v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ltl_buchi.rs:91:35
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn process_literal(&mut self, mut node: Node, literal: LtlFormula<u8>) {
[INFO] [stdout]    |                                   ----^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ltl_buchi.rs:91:35
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn process_literal(&mut self, mut node: Node, literal: LtlFormula<u8>) {
[INFO] [stdout]    |                                   ----^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "2cb24aae79f80b937c072e63ca8b90f2bb8d87dbb21d2460fe87595e1f2c91cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cb24aae79f80b937c072e63ca8b90f2bb8d87dbb21d2460fe87595e1f2c91cb", kill_on_drop: false }`
[INFO] [stdout] 2cb24aae79f80b937c072e63ca8b90f2bb8d87dbb21d2460fe87595e1f2c91cb