[INFO] cloning repository https://github.com/cyplo/boolean_calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cyplo/boolean_calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Fboolean_calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Fboolean_calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d26e1eb3666547c2c565a0d02cef2b59b787dab7
[INFO] checking cyplo/boolean_calculator against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyplo%2Fboolean_calculator" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cyplo/boolean_calculator on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cyplo/boolean_calculator
[INFO] finished tweaking git repo https://github.com/cyplo/boolean_calculator
[INFO] tweaked toml for git repo https://github.com/cyplo/boolean_calculator written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/cyplo/boolean_calculator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cc6c89d883285816b21f67388c42b2e13922b1d1f051c1086b5ea81768226c9
[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" "2cc6c89d883285816b21f67388c42b2e13922b1d1f051c1086b5ea81768226c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc6c89d883285816b21f67388c42b2e13922b1d1f051c1086b5ea81768226c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc6c89d883285816b21f67388c42b2e13922b1d1f051c1086b5ea81768226c9", kill_on_drop: false }`
[INFO] [stdout] 2cc6c89d883285816b21f67388c42b2e13922b1d1f051c1086b5ea81768226c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 839e857724c551b9f54e24081490a9a2fd3d4981682670f71a209920dc29dcc5
[INFO] running `Command { std: "docker" "start" "-a" "839e857724c551b9f54e24081490a9a2fd3d4981682670f71a209920dc29dcc5", kill_on_drop: false }`
[INFO] [stderr]     Checking boolean_calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub fn new(text: &str) -> Calculator {
[INFO] [stdout]   |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub fn new(text: &str) -> Calculator {
[INFO] [stdout]   |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub fn new(text: &str) -> Calculator {
[INFO] [stdout]   |                ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_result`
[INFO] [stdout]   --> src/lib.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         pub fn get_result(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "839e857724c551b9f54e24081490a9a2fd3d4981682670f71a209920dc29dcc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "839e857724c551b9f54e24081490a9a2fd3d4981682670f71a209920dc29dcc5", kill_on_drop: false }`
[INFO] [stdout] 839e857724c551b9f54e24081490a9a2fd3d4981682670f71a209920dc29dcc5