[INFO] cloning repository https://github.com/rusticpow/vector_clock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rusticpow/vector_clock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusticpow%2Fvector_clock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusticpow%2Fvector_clock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17b5360b0a07359c82652fdf22912f9e3b9a05c5
[INFO] checking rusticpow/vector_clock against try#409ef99a7d4dc96ae91f65d4b48413ed174514d6 for pr-137633
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusticpow%2Fvector_clock" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rusticpow/vector_clock on toolchain 409ef99a7d4dc96ae91f65d4b48413ed174514d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rusticpow/vector_clock
[INFO] finished tweaking git repo https://github.com/rusticpow/vector_clock
[INFO] tweaked toml for git repo https://github.com/rusticpow/vector_clock written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rusticpow/vector_clock 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" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "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 rusticpow/vector_clock against try#409ef99a7d4dc96ae91f65d4b48413ed174514d6 for pr-137633
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusticpow%2Fvector_clock" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rusticpow/vector_clock on toolchain 409ef99a7d4dc96ae91f65d4b48413ed174514d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rusticpow/vector_clock
[INFO] finished tweaking git repo https://github.com/rusticpow/vector_clock
[INFO] tweaked toml for git repo https://github.com/rusticpow/vector_clock written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rusticpow/vector_clock 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" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03ebc9a085685418d12f670bab15cfb50f80d73208ea69da680c1041edb95970
[INFO] running `Command { std: "docker" "start" "-a" "03ebc9a085685418d12f670bab15cfb50f80d73208ea69da680c1041edb95970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03ebc9a085685418d12f670bab15cfb50f80d73208ea69da680c1041edb95970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ebc9a085685418d12f670bab15cfb50f80d73208ea69da680c1041edb95970", kill_on_drop: false }`
[INFO] [stdout] 03ebc9a085685418d12f670bab15cfb50f80d73208ea69da680c1041edb95970
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb7a208fef3220766cbf0f1ae4947c05441f017cb93c70d3005c972ab0ae9c5c
[INFO] running `Command { std: "docker" "start" "-a" "bb7a208fef3220766cbf0f1ae4947c05441f017cb93c70d3005c972ab0ae9c5c", kill_on_drop: false }`
[INFO] [stderr]     Checking vector_clock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ops::Deref`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::max, ops::Deref};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Deref`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::max, ops::Deref};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut node: &mut Node;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VectorClock` is never constructed
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct VectorClock {}
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `add_internal_event` and `receive_event` are never used
[INFO] [stdout]   --> src/main.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl VectorClock {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 8  |     fn add_internal_event(nodes: &mut Vec<Node>, node_id: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn receive_event(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut node: &mut Node;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "bb7a208fef3220766cbf0f1ae4947c05441f017cb93c70d3005c972ab0ae9c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb7a208fef3220766cbf0f1ae4947c05441f017cb93c70d3005c972ab0ae9c5c", kill_on_drop: false }`
[INFO] [stdout] bb7a208fef3220766cbf0f1ae4947c05441f017cb93c70d3005c972ab0ae9c5c