[INFO] cloning repository https://github.com/kallehed/BinaryHeap-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kallehed/BinaryHeap-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkallehed%2FBinaryHeap-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkallehed%2FBinaryHeap-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52b3b0c56b5e267a766b2d380feaa92bba0d96a8
[INFO] building kallehed/BinaryHeap-Rust against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkallehed%2FBinaryHeap-Rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kallehed/BinaryHeap-Rust on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kallehed/BinaryHeap-Rust
[INFO] finished tweaking git repo https://github.com/kallehed/BinaryHeap-Rust
[INFO] tweaked toml for git repo https://github.com/kallehed/BinaryHeap-Rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kallehed/BinaryHeap-Rust 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" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] building kallehed/BinaryHeap-Rust against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkallehed%2FBinaryHeap-Rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kallehed/BinaryHeap-Rust on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kallehed/BinaryHeap-Rust
[INFO] finished tweaking git repo https://github.com/kallehed/BinaryHeap-Rust
[INFO] tweaked toml for git repo https://github.com/kallehed/BinaryHeap-Rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kallehed/BinaryHeap-Rust 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a733e3b2f6b3a5f92b176c8cfb7b3ba5681e57c7d8b486a5d91da2c4fbb6b26
[INFO] running `Command { std: "docker" "start" "-a" "8a733e3b2f6b3a5f92b176c8cfb7b3ba5681e57c7d8b486a5d91da2c4fbb6b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a733e3b2f6b3a5f92b176c8cfb7b3ba5681e57c7d8b486a5d91da2c4fbb6b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a733e3b2f6b3a5f92b176c8cfb7b3ba5681e57c7d8b486a5d91da2c4fbb6b26", kill_on_drop: false }`
[INFO] [stdout] 8a733e3b2f6b3a5f92b176c8cfb7b3ba5681e57c7d8b486a5d91da2c4fbb6b26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00ccb5d118946627f3cbace8ad2d5074603c2c80ace728dd211d92cf7ed9089a
[INFO] running `Command { std: "docker" "start" "-a" "00ccb5d118946627f3cbace8ad2d5074603c2c80ace728dd211d92cf7ed9089a", kill_on_drop: false }`
[INFO] [stderr]    Compiling binaryheap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `flow_down_rec` is never used
[INFO] [stdout]   --> src/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<T: PartialOrd> BinaryHeap<T> {
[INFO] [stdout]    | --------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn flow_down_rec(&mut self, idx: usize, vec_len: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "00ccb5d118946627f3cbace8ad2d5074603c2c80ace728dd211d92cf7ed9089a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00ccb5d118946627f3cbace8ad2d5074603c2c80ace728dd211d92cf7ed9089a", kill_on_drop: false }`
[INFO] [stdout] 00ccb5d118946627f3cbace8ad2d5074603c2c80ace728dd211d92cf7ed9089a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ce6e700c8fcf38c610658625cb55ecb977a7ba40cdf4fc891a0c38b6e2b6909
[INFO] running `Command { std: "docker" "start" "-a" "1ce6e700c8fcf38c610658625cb55ecb977a7ba40cdf4fc891a0c38b6e2b6909", kill_on_drop: false }`
[INFO] [stderr]    Compiling binaryheap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `flow_down_rec` is never used
[INFO] [stdout]   --> src/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<T: PartialOrd> BinaryHeap<T> {
[INFO] [stdout]    | --------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn flow_down_rec(&mut self, idx: usize, vec_len: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flow_down_rec` is never used
[INFO] [stdout]   --> src/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<T: PartialOrd> BinaryHeap<T> {
[INFO] [stdout]    | --------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn flow_down_rec(&mut self, idx: usize, vec_len: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "1ce6e700c8fcf38c610658625cb55ecb977a7ba40cdf4fc891a0c38b6e2b6909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce6e700c8fcf38c610658625cb55ecb977a7ba40cdf4fc891a0c38b6e2b6909", kill_on_drop: false }`
[INFO] [stdout] 1ce6e700c8fcf38c610658625cb55ecb977a7ba40cdf4fc891a0c38b6e2b6909