[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 master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yishn/Kalk on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 021571362ed43216a51f4f6a1d1763d33097c6dff02adf3efae7abf1e49e2f81
[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" "021571362ed43216a51f4f6a1d1763d33097c6dff02adf3efae7abf1e49e2f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "021571362ed43216a51f4f6a1d1763d33097c6dff02adf3efae7abf1e49e2f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "021571362ed43216a51f4f6a1d1763d33097c6dff02adf3efae7abf1e49e2f81", kill_on_drop: false }`
[INFO] [stdout] 021571362ed43216a51f4f6a1d1763d33097c6dff02adf3efae7abf1e49e2f81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4875035f617bff8c5ef2e340ae2b2655f53deefce880de514917e33b619baa5c
[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" "4875035f617bff8c5ef2e340ae2b2655f53deefce880de514917e33b619baa5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling synom v0.11.3
[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 12.42s
[INFO] running `Command { std: "docker" "inspect" "4875035f617bff8c5ef2e340ae2b2655f53deefce880de514917e33b619baa5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4875035f617bff8c5ef2e340ae2b2655f53deefce880de514917e33b619baa5c", kill_on_drop: false }`
[INFO] [stdout] 4875035f617bff8c5ef2e340ae2b2655f53deefce880de514917e33b619baa5c