[INFO] cloning repository https://github.com/c-cube/strictly_tally
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/c-cube/strictly_tally" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-cube%2Fstrictly_tally", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-cube%2Fstrictly_tally'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 355075a84f98b9192d3fcb4916ebfd5751c1c3e7
[INFO] checking c-cube/strictly_tally against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-cube%2Fstrictly_tally" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/c-cube/strictly_tally on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/c-cube/strictly_tally
[INFO] finished tweaking git repo https://github.com/c-cube/strictly_tally
[INFO] tweaked toml for git repo https://github.com/c-cube/strictly_tally written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/c-cube/strictly_tally already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37f7064acbf651e88b1b8764809d1479ea215b2135bf5bc08470984cf40b4f87
[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" "37f7064acbf651e88b1b8764809d1479ea215b2135bf5bc08470984cf40b4f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37f7064acbf651e88b1b8764809d1479ea215b2135bf5bc08470984cf40b4f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f7064acbf651e88b1b8764809d1479ea215b2135bf5bc08470984cf40b4f87", kill_on_drop: false }`
[INFO] [stdout] 37f7064acbf651e88b1b8764809d1479ea215b2135bf5bc08470984cf40b4f87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] f6adae88680bfd131bd31ca7d848c83dd0aee0b37fe756dc3c6c9d20b1634f3a
[INFO] running `Command { std: "docker" "start" "-a" "f6adae88680bfd131bd31ca7d848c83dd0aee0b37fe756dc3c6c9d20b1634f3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking strictly_tally v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `notes`
[INFO] [stdout]    --> src/main.rs:299:20
[INFO] [stdout]     |
[INFO] [stdout] 299 |         let Sheet {notes, judges, competitors, ..} = self;
[INFO] [stdout]     |                    ^^^^^ help: try ignoring the field: `notes: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `judges`
[INFO] [stdout]    --> src/main.rs:299:27
[INFO] [stdout]     |
[INFO] [stdout] 299 |         let Sheet {notes, judges, competitors, ..} = self;
[INFO] [stdout]     |                           ^^^^^^ help: try ignoring the field: `judges: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `notes`
[INFO] [stdout]    --> src/main.rs:299:20
[INFO] [stdout]     |
[INFO] [stdout] 299 |         let Sheet {notes, judges, competitors, ..} = self;
[INFO] [stdout]     |                    ^^^^^ help: try ignoring the field: `notes: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `judges`
[INFO] [stdout]    --> src/main.rs:299:27
[INFO] [stdout]     |
[INFO] [stdout] 299 |         let Sheet {notes, judges, competitors, ..} = self;
[INFO] [stdout]     |                           ^^^^^^ help: try ignoring the field: `judges: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 |                     write!(out, "{:?}", c);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_one`
[INFO] [stdout]   --> src/main.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn as_one(&self) -> Option<&T> {
[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: `map`
[INFO] [stdout]   --> src/main.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn map<F, U>(&self, mut f: F) -> Cluster<U> where F: FnMut(&T) -> U {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]    --> src/main.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn from_str(s: &str) -> Res<Self> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 |                     write!(out, "{:?}", c);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.71s
[INFO] running `Command { std: "docker" "inspect" "f6adae88680bfd131bd31ca7d848c83dd0aee0b37fe756dc3c6c9d20b1634f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6adae88680bfd131bd31ca7d848c83dd0aee0b37fe756dc3c6c9d20b1634f3a", kill_on_drop: false }`
[INFO] [stdout] f6adae88680bfd131bd31ca7d848c83dd0aee0b37fe756dc3c6c9d20b1634f3a