[INFO] cloning repository https://github.com/yishn/Kalk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yishn/Kalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c45819137eb1d319001a019cde9e967d957cd94
[INFO] checking yishn/Kalk against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yishn/Kalk on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yishn/Kalk
[INFO] finished tweaking git repo https://github.com/yishn/Kalk
[INFO] tweaked toml for git repo https://github.com/yishn/Kalk written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/yishn/Kalk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest v1.0.6
[INFO] [stderr]   Downloaded pest_derive v1.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8331f172d043b4c098fd8184d8b581c7cbab91b422a9f96c82da9f6d608eb2a9
[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" "8331f172d043b4c098fd8184d8b581c7cbab91b422a9f96c82da9f6d608eb2a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8331f172d043b4c098fd8184d8b581c7cbab91b422a9f96c82da9f6d608eb2a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8331f172d043b4c098fd8184d8b581c7cbab91b422a9f96c82da9f6d608eb2a9", kill_on_drop: false }`
[INFO] [stdout] 8331f172d043b4c098fd8184d8b581c7cbab91b422a9f96c82da9f6d608eb2a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b96939bc56695445b2e53b7d4d3327ca640246e9a68dc13fde99bd949596fdff
[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" "b96939bc56695445b2e53b7d4d3327ca640246e9a68dc13fde99bd949596fdff", kill_on_drop: false }`
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]     Checking kalk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new_finite`
[INFO] [stdout]    --> src/types.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
[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: `new_infinite`
[INFO] [stdout]    --> src/types.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_finite`
[INFO] [stdout]    --> src/types.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
[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: `new_infinite`
[INFO] [stdout]    --> src/types.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.08s
[INFO] running `Command { std: "docker" "inspect" "b96939bc56695445b2e53b7d4d3327ca640246e9a68dc13fde99bd949596fdff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96939bc56695445b2e53b7d4d3327ca640246e9a68dc13fde99bd949596fdff", kill_on_drop: false }`
[INFO] [stdout] b96939bc56695445b2e53b7d4d3327ca640246e9a68dc13fde99bd949596fdff