[INFO] cloning repository https://github.com/rowanclarke/rs-collapse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rowanclarke/rs-collapse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowanclarke%2Frs-collapse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowanclarke%2Frs-collapse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4594364a041d271ab77afa2e20e8d1179c8e6c20
[INFO] checking rowanclarke/rs-collapse against master#19dd9535408db0f1ff3d16613619076aef524d19 for pr-115950
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowanclarke%2Frs-collapse" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rowanclarke/rs-collapse on toolchain 19dd9535408db0f1ff3d16613619076aef524d19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rowanclarke/rs-collapse
[INFO] finished tweaking git repo https://github.com/rowanclarke/rs-collapse
[INFO] tweaked toml for git repo https://github.com/rowanclarke/rs-collapse written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rowanclarke/rs-collapse 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" "+19dd9535408db0f1ff3d16613619076aef524d19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cda39a6f7f72121c73b979ea7177175f40c25349f82bec6310d851032bc2a8e
[INFO] running `Command { std: "docker" "start" "-a" "8cda39a6f7f72121c73b979ea7177175f40c25349f82bec6310d851032bc2a8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cda39a6f7f72121c73b979ea7177175f40c25349f82bec6310d851032bc2a8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cda39a6f7f72121c73b979ea7177175f40c25349f82bec6310d851032bc2a8e", kill_on_drop: false }`
[INFO] [stdout] 8cda39a6f7f72121c73b979ea7177175f40c25349f82bec6310d851032bc2a8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba540b5adc08bf0edba3f66bebc801c6c9cb993426da8b41854b2aca2bb227db
[INFO] running `Command { std: "docker" "start" "-a" "ba540b5adc08bf0edba3f66bebc801c6c9cb993426da8b41854b2aca2bb227db", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rs-collapse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `new` and `add` are never used
[INFO] [stdout]   --> src/iter/filter.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<I: Iterator> AccumulateFilter<I> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new(iter: I) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn add(&mut self, filter: Rc<dyn Fn(<I as Iterator>::Item) -> bool>) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "ba540b5adc08bf0edba3f66bebc801c6c9cb993426da8b41854b2aca2bb227db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba540b5adc08bf0edba3f66bebc801c6c9cb993426da8b41854b2aca2bb227db", kill_on_drop: false }`
[INFO] [stdout] ba540b5adc08bf0edba3f66bebc801c6c9cb993426da8b41854b2aca2bb227db