[INFO] cloning repository https://github.com/joakin/rust-random-text-generation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joakin/rust-random-text-generation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoakin%2Frust-random-text-generation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoakin%2Frust-random-text-generation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd60a83f4c992fb355498b3c2e198322b302ff91
[INFO] checking joakin/rust-random-text-generation against try#c05ee43175e02d208faed1fcc0f436c56e48bba6 for pr-92413
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoakin%2Frust-random-text-generation" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joakin/rust-random-text-generation on toolchain c05ee43175e02d208faed1fcc0f436c56e48bba6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c05ee43175e02d208faed1fcc0f436c56e48bba6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joakin/rust-random-text-generation
[INFO] finished tweaking git repo https://github.com/joakin/rust-random-text-generation
[INFO] tweaked toml for git repo https://github.com/joakin/rust-random-text-generation written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/joakin/rust-random-text-generation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c05ee43175e02d208faed1fcc0f436c56e48bba6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded criterion-plot v0.3.0
[INFO] [stderr]   Downloaded criterion v0.2.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+c05ee43175e02d208faed1fcc0f436c56e48bba6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f9a9e9262cce7a9d3bf05bf26ec8a187e11a0fbad7f1b76a8cb0ce7e28edf67
[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" "5f9a9e9262cce7a9d3bf05bf26ec8a187e11a0fbad7f1b76a8cb0ce7e28edf67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f9a9e9262cce7a9d3bf05bf26ec8a187e11a0fbad7f1b76a8cb0ce7e28edf67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9a9e9262cce7a9d3bf05bf26ec8a187e11a0fbad7f1b76a8cb0ce7e28edf67", kill_on_drop: false }`
[INFO] [stdout] 5f9a9e9262cce7a9d3bf05bf26ec8a187e11a0fbad7f1b76a8cb0ce7e28edf67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+c05ee43175e02d208faed1fcc0f436c56e48bba6" "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] 6534d186ff99fa412658c5b638e0abf5a4ba47227deb4be4df15c0eb9ee1f25d
[INFO] running `Command { std: "docker" "start" "-a" "6534d186ff99fa412658c5b638e0abf5a4ba47227deb4be4df15c0eb9ee1f25d", kill_on_drop: false }`
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[INFO] [stderr]     Checking rust_random_text_generation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: lifetime parameter `'a` never used
[INFO] [stdout]  --> src/sentence_generator.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> SentenceGenerator {
[INFO] [stdout]   |     -^^- help: elide the unused lifetime
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[deny(unused_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime parameter `'a` never used
[INFO] [stdout]  --> src/sentence_generator.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> SentenceGenerator {
[INFO] [stdout]   |     -^^- help: elide the unused lifetime
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[deny(unused_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_random_text_generation` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6534d186ff99fa412658c5b638e0abf5a4ba47227deb4be4df15c0eb9ee1f25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6534d186ff99fa412658c5b638e0abf5a4ba47227deb4be4df15c0eb9ee1f25d", kill_on_drop: false }`
[INFO] [stdout] 6534d186ff99fa412658c5b638e0abf5a4ba47227deb4be4df15c0eb9ee1f25d