[INFO] cloning repository https://github.com/jo/my-shiny-heroku-rust-test-app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jo/my-shiny-heroku-rust-test-app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjo%2Fmy-shiny-heroku-rust-test-app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjo%2Fmy-shiny-heroku-rust-test-app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7ed6765382f144860a450f0432107b0387c0610
[INFO] checking jo/my-shiny-heroku-rust-test-app against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjo%2Fmy-shiny-heroku-rust-test-app" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jo/my-shiny-heroku-rust-test-app on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jo/my-shiny-heroku-rust-test-app
[INFO] finished tweaking git repo https://github.com/jo/my-shiny-heroku-rust-test-app
[INFO] tweaked toml for git repo https://github.com/jo/my-shiny-heroku-rust-test-app written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/jo/my-shiny-heroku-rust-test-app already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", 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] f60bbcf79fa12c6eb4055221b9b0656b45e15a8a9c4eeeeb4b65a29046d3c8b4
[INFO] running `Command { std: "docker" "start" "-a" "f60bbcf79fa12c6eb4055221b9b0656b45e15a8a9c4eeeeb4b65a29046d3c8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f60bbcf79fa12c6eb4055221b9b0656b45e15a8a9c4eeeeb4b65a29046d3c8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60bbcf79fa12c6eb4055221b9b0656b45e15a8a9c4eeeeb4b65a29046d3c8b4", kill_on_drop: false }`
[INFO] [stdout] f60bbcf79fa12c6eb4055221b9b0656b45e15a8a9c4eeeeb4b65a29046d3c8b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7c75d680bb53a2b8577f0f7b1a58115e01a6ba04cd6092f8bdca5dc1ac3bf4c
[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" "d7c75d680bb53a2b8577f0f7b1a58115e01a6ba04cd6092f8bdca5dc1ac3bf4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking my-shiny-heroku-rust-test-app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     Iron::new(|_: &mut Request| Ok(Response::with((status::Ok, "Hello world!"))))
[INFO] [stdout] 11 | |         .http(format!("0.0.0.0:{}", port));
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     Iron::new(|_: &mut Request| Ok(Response::with((status::Ok, "Hello world!"))))
[INFO] [stdout] 11 | |         .http(format!("0.0.0.0:{}", port));
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.52s
[INFO] running `Command { std: "docker" "inspect" "d7c75d680bb53a2b8577f0f7b1a58115e01a6ba04cd6092f8bdca5dc1ac3bf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7c75d680bb53a2b8577f0f7b1a58115e01a6ba04cd6092f8bdca5dc1ac3bf4c", kill_on_drop: false }`
[INFO] [stdout] d7c75d680bb53a2b8577f0f7b1a58115e01a6ba04cd6092f8bdca5dc1ac3bf4c