[INFO] cloning repository https://github.com/WardToulet/lorsum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WardToulet/lorsum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Florsum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Florsum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4064a94b8783c5b8a8eab71010fd93222c423477
[INFO] checking WardToulet/lorsum against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Florsum" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WardToulet/lorsum
[INFO] finished tweaking git repo https://github.com/WardToulet/lorsum
[INFO] tweaked toml for git repo https://github.com/WardToulet/lorsum written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WardToulet/lorsum on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/WardToulet/lorsum 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d35036164c6906119084734e8a5bf463d187567422ead4a6255ce456a5bf2f0
[INFO] running `Command { std: "docker" "start" "-a" "6d35036164c6906119084734e8a5bf463d187567422ead4a6255ce456a5bf2f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d35036164c6906119084734e8a5bf463d187567422ead4a6255ce456a5bf2f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d35036164c6906119084734e8a5bf463d187567422ead4a6255ce456a5bf2f0", kill_on_drop: false }`
[INFO] [stdout] 6d35036164c6906119084734e8a5bf463d187567422ead4a6255ce456a5bf2f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0018bb5d99de74942a1dee3ecdcdecb6b167b87986e6575050dc6f2d0e7772f9
[INFO] running `Command { std: "docker" "start" "-a" "0018bb5d99de74942a1dee3ecdcdecb6b167b87986e6575050dc6f2d0e7772f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking lorsum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paragraphs` is never read
[INFO] [stdout]   --> src/bin.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 11 |     #[structopt(short, long, default_value = "1")]
[INFO] [stdout] 12 |     paragraphs: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paragraphs` is never read
[INFO] [stdout]   --> src/bin.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 11 |     #[structopt(short, long, default_value = "1")]
[INFO] [stdout] 12 |     paragraphs: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(short, long)]
[INFO] [stdout] 15 | |     file: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(short, long)]
[INFO] [stdout] 15 | |     file: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lorsum` (bin "lorsum") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lorsum` (bin "lorsum" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "0018bb5d99de74942a1dee3ecdcdecb6b167b87986e6575050dc6f2d0e7772f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0018bb5d99de74942a1dee3ecdcdecb6b167b87986e6575050dc6f2d0e7772f9", kill_on_drop: false }`
[INFO] [stdout] 0018bb5d99de74942a1dee3ecdcdecb6b167b87986e6575050dc6f2d0e7772f9