[INFO] cloning repository https://github.com/daniel-butler/pub-sub-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daniel-butler/pub-sub-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-butler%2Fpub-sub-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-butler%2Fpub-sub-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2975b727098be155f845346416994ef2208ddebd
[INFO] checking daniel-butler/pub-sub-learning against try#2c4819a380dbddb1f2a0f4405a49fb6ed90983ae for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-butler%2Fpub-sub-learning" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/daniel-butler/pub-sub-learning
[INFO] finished tweaking git repo https://github.com/daniel-butler/pub-sub-learning
[INFO] tweaked toml for git repo https://github.com/daniel-butler/pub-sub-learning written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/daniel-butler/pub-sub-learning on toolchain 2c4819a380dbddb1f2a0f4405a49fb6ed90983ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/daniel-butler/pub-sub-learning 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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "4365c39b465ae58f195526713f6dbe1cad58460d1ff13385db97e1e6e41488d0", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "49d1523113bdfb760cd37bf6dacd3071a6b67b8f878a327b1c30f734cdb3830f", kill_on_drop: false }`
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[INFO] [stdout] warning: constant `OUTPUT_PATH` is never used
[INFO] [stdout]  --> tests/src/main.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const OUTPUT_PATH: &str = "/tmp/pub-out-fifo";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_pub_sub` is never used
[INFO] [stdout]  --> tests/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_pub_sub() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.51s
[INFO] running `Command { std: "docker" "inspect" "49d1523113bdfb760cd37bf6dacd3071a6b67b8f878a327b1c30f734cdb3830f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49d1523113bdfb760cd37bf6dacd3071a6b67b8f878a327b1c30f734cdb3830f", kill_on_drop: false }`
[INFO] [stdout] 49d1523113bdfb760cd37bf6dacd3071a6b67b8f878a327b1c30f734cdb3830f