[INFO] cloning repository https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ponnusamy-krish/rust_fibonacci" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponnusamy-krish%2Frust_fibonacci", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponnusamy-krish%2Frust_fibonacci'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5d64c5c48239ade1da49cd024a596937c360e54
[INFO] checking ponnusamy-krish/rust_fibonacci against master#6a9758d4f38d4763bd437c48fa7e5246cecf8d04 for pr-124355
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponnusamy-krish%2Frust_fibonacci" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ponnusamy-krish/rust_fibonacci on toolchain 6a9758d4f38d4763bd437c48fa7e5246cecf8d04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a9758d4f38d4763bd437c48fa7e5246cecf8d04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] finished tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] tweaked toml for git repo https://github.com/ponnusamy-krish/rust_fibonacci written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ponnusamy-krish/rust_fibonacci 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" "+6a9758d4f38d4763bd437c48fa7e5246cecf8d04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking ponnusamy-krish/rust_fibonacci against try#99e7531f0d1cf95a50aff9cccb24863963e6bbe2 for pr-124355
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponnusamy-krish%2Frust_fibonacci" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ponnusamy-krish/rust_fibonacci on toolchain 99e7531f0d1cf95a50aff9cccb24863963e6bbe2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] finished tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] tweaked toml for git repo https://github.com/ponnusamy-krish/rust_fibonacci written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ponnusamy-krish/rust_fibonacci 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" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking ponnusamy-krish/rust_fibonacci against try#99e7531f0d1cf95a50aff9cccb24863963e6bbe2 for pr-124355
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponnusamy-krish%2Frust_fibonacci" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ponnusamy-krish/rust_fibonacci on toolchain 99e7531f0d1cf95a50aff9cccb24863963e6bbe2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] finished tweaking git repo https://github.com/ponnusamy-krish/rust_fibonacci
[INFO] tweaked toml for git repo https://github.com/ponnusamy-krish/rust_fibonacci written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ponnusamy-krish/rust_fibonacci 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" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7219682dbce3c97ae0d6cc724add08ad0e3ee15eb2ebc0daeeefed430fa6a14
[INFO] running `Command { std: "docker" "start" "-a" "b7219682dbce3c97ae0d6cc724add08ad0e3ee15eb2ebc0daeeefed430fa6a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7219682dbce3c97ae0d6cc724add08ad0e3ee15eb2ebc0daeeefed430fa6a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7219682dbce3c97ae0d6cc724add08ad0e3ee15eb2ebc0daeeefed430fa6a14", kill_on_drop: false }`
[INFO] [stdout] b7219682dbce3c97ae0d6cc724add08ad0e3ee15eb2ebc0daeeefed430fa6a14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e35bd824a0a3b15d3ffa80b029b77021f32462a893fb0338896bbe457fcbaac8
[INFO] running `Command { std: "docker" "start" "-a" "e35bd824a0a3b15d3ffa80b029b77021f32462a893fb0338896bbe457fcbaac8", kill_on_drop: false }`
[INFO] [stderr]     Checking fibonacci v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `fib1` is never read
[INFO] [stdout]  --> src/main.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |  let mut fib1 = 0;
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fib1` is never read
[INFO] [stdout]  --> src/main.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |  let mut fib1 = 0;
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` 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` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "e35bd824a0a3b15d3ffa80b029b77021f32462a893fb0338896bbe457fcbaac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35bd824a0a3b15d3ffa80b029b77021f32462a893fb0338896bbe457fcbaac8", kill_on_drop: false }`
[INFO] [stdout] e35bd824a0a3b15d3ffa80b029b77021f32462a893fb0338896bbe457fcbaac8