[INFO] cloning repository https://github.com/jvanstraten/fletcher_streams
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jvanstraten/fletcher_streams" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvanstraten%2Ffletcher_streams", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvanstraten%2Ffletcher_streams'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9576cbc1a530d4f4440ba1f4ad6c8269450e0dc3
[INFO] checking jvanstraten/fletcher_streams against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvanstraten%2Ffletcher_streams" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvanstraten/fletcher_streams on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jvanstraten/fletcher_streams
[INFO] finished tweaking git repo https://github.com/jvanstraten/fletcher_streams
[INFO] tweaked toml for git repo https://github.com/jvanstraten/fletcher_streams written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jvanstraten/fletcher_streams already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] d598ee78cbf78a5e4e5621521d45138e12b5cf4e357d664e3614e1fb13ca1462
[INFO] running `Command { std: "docker" "start" "-a" "d598ee78cbf78a5e4e5621521d45138e12b5cf4e357d664e3614e1fb13ca1462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d598ee78cbf78a5e4e5621521d45138e12b5cf4e357d664e3614e1fb13ca1462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d598ee78cbf78a5e4e5621521d45138e12b5cf4e357d664e3614e1fb13ca1462", kill_on_drop: false }`
[INFO] [stdout] d598ee78cbf78a5e4e5621521d45138e12b5cf4e357d664e3614e1fb13ca1462
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 890bb5be2e98f1af674c51ef738b268414b59d1bb71da70459fdbb3aef92d2a0
[INFO] running `Command { std: "docker" "start" "-a" "890bb5be2e98f1af674c51ef738b268414b59d1bb71da70459fdbb3aef92d2a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking pest v2.1.2
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking fletcher_streams v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]   --> src/main.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/main.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     end: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]   --> src/main.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/main.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     end: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.42s
[INFO] running `Command { std: "docker" "inspect" "890bb5be2e98f1af674c51ef738b268414b59d1bb71da70459fdbb3aef92d2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "890bb5be2e98f1af674c51ef738b268414b59d1bb71da70459fdbb3aef92d2a0", kill_on_drop: false }`
[INFO] [stdout] 890bb5be2e98f1af674c51ef738b268414b59d1bb71da70459fdbb3aef92d2a0