[INFO] cloning repository https://github.com/jimm/rigor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimm/rigor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimm%2Frigor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimm%2Frigor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7382a36800970043bd7634f362d091dcea9a17b5
[INFO] checking jimm/rigor against master#667247db71ea18c4130dd018d060e7f09d589490 for pr-140824
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimm%2Frigor" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jimm/rigor on toolchain 667247db71ea18c4130dd018d060e7f09d589490
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jimm/rigor
[INFO] finished tweaking git repo https://github.com/jimm/rigor
[INFO] tweaked toml for git repo https://github.com/jimm/rigor written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jimm/rigor 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" "+667247db71ea18c4130dd018d060e7f09d589490" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded portmidi v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8b7d173894aefec21e9d78160884d639594b74d06e388ade826e4083d9f7ee2
[INFO] running `Command { std: "docker" "start" "-a" "e8b7d173894aefec21e9d78160884d639594b74d06e388ade826e4083d9f7ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b7d173894aefec21e9d78160884d639594b74d06e388ade826e4083d9f7ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b7d173894aefec21e9d78160884d639594b74d06e388ade826e4083d9f7ee2", kill_on_drop: false }`
[INFO] [stdout] e8b7d173894aefec21e9d78160884d639594b74d06e388ade826e4083d9f7ee2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+667247db71ea18c4130dd018d060e7f09d589490" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35533b66a57c87c6afd151e7a5cf2e6e4f982f515798764e7813b35e9c722db3
[INFO] running `Command { std: "docker" "start" "-a" "35533b66a57c87c6afd151e7a5cf2e6e4f982f515798764e7813b35e9c722db3", kill_on_drop: false }`
[INFO] [stderr]     Checking portmidi v0.2.6
[INFO] [stderr]     Checking rigor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `port` is never read
[INFO] [stdout]  --> src/km/input.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Input<'a> {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |     port: &'a InputPort<'a>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `port` is never read
[INFO] [stdout]  --> src/km/output.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Output<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 4 |     port: &'a OutputPort<'a>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `port` is never read
[INFO] [stdout]  --> src/km/input.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Input<'a> {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |     port: &'a InputPort<'a>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `port` is never read
[INFO] [stdout]  --> src/km/output.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Output<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 4 |     port: &'a OutputPort<'a>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "35533b66a57c87c6afd151e7a5cf2e6e4f982f515798764e7813b35e9c722db3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35533b66a57c87c6afd151e7a5cf2e6e4f982f515798764e7813b35e9c722db3", kill_on_drop: false }`
[INFO] [stdout] 35533b66a57c87c6afd151e7a5cf2e6e4f982f515798764e7813b35e9c722db3