[INFO] cloning repository https://github.com/Gabriel-Alves-Cunha/rate_of_yield
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gabriel-Alves-Cunha/rate_of_yield" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabriel-Alves-Cunha%2Frate_of_yield", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabriel-Alves-Cunha%2Frate_of_yield'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7461e58383ce8f615fa7ae506998685746e79d7a
[INFO] checking Gabriel-Alves-Cunha/rate_of_yield against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabriel-Alves-Cunha%2Frate_of_yield" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gabriel-Alves-Cunha/rate_of_yield on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gabriel-Alves-Cunha/rate_of_yield
[INFO] finished tweaking git repo https://github.com/Gabriel-Alves-Cunha/rate_of_yield
[INFO] tweaked toml for git repo https://github.com/Gabriel-Alves-Cunha/rate_of_yield written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Gabriel-Alves-Cunha/rate_of_yield already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bb49d89439d7dc0d9e1e5a6b0b18e5b746b32fe3c5620fb8846c3d9121e3730
[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" "9bb49d89439d7dc0d9e1e5a6b0b18e5b746b32fe3c5620fb8846c3d9121e3730", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bb49d89439d7dc0d9e1e5a6b0b18e5b746b32fe3c5620fb8846c3d9121e3730", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bb49d89439d7dc0d9e1e5a6b0b18e5b746b32fe3c5620fb8846c3d9121e3730", kill_on_drop: false }`
[INFO] [stdout] 9bb49d89439d7dc0d9e1e5a6b0b18e5b746b32fe3c5620fb8846c3d9121e3730
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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] 3000248c700ebddb858670d00d1a818456203c0c2d72d3ab4e2318b39af95b5b
[INFO] running `Command { std: "docker" "start" "-a" "3000248c700ebddb858670d00d1a818456203c0c2d72d3ab4e2318b39af95b5b", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking rate_of_yield v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:5:30
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{BufRead, BufReader, BufWriter, Write},
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:5:30
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{BufRead, BufReader, BufWriter, Write},
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.75s
[INFO] running `Command { std: "docker" "inspect" "3000248c700ebddb858670d00d1a818456203c0c2d72d3ab4e2318b39af95b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3000248c700ebddb858670d00d1a818456203c0c2d72d3ab4e2318b39af95b5b", kill_on_drop: false }`
[INFO] [stdout] 3000248c700ebddb858670d00d1a818456203c0c2d72d3ab4e2318b39af95b5b