[INFO] cloning repository https://github.com/djpatra/sieve_cache
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djpatra/sieve_cache" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Fsieve_cache", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Fsieve_cache'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55e3c1e9d3b0848b1de85b60bde4e51bbc3ec166
[INFO] checking djpatra/sieve_cache against try#b10dae361a61486cfbdcd3aae3877ee17e00d192 for pr-153912
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Fsieve_cache" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/djpatra/sieve_cache
[INFO] finished tweaking git repo https://github.com/djpatra/sieve_cache
[INFO] tweaked toml for git repo https://github.com/djpatra/sieve_cache written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/djpatra/sieve_cache on toolchain b10dae361a61486cfbdcd3aae3877ee17e00d192
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/djpatra/sieve_cache 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" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "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 djpatra/sieve_cache against try#b10dae361a61486cfbdcd3aae3877ee17e00d192 for pr-153912
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Fsieve_cache" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/djpatra/sieve_cache
[INFO] finished tweaking git repo https://github.com/djpatra/sieve_cache
[INFO] tweaked toml for git repo https://github.com/djpatra/sieve_cache written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/djpatra/sieve_cache on toolchain b10dae361a61486cfbdcd3aae3877ee17e00d192
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/djpatra/sieve_cache 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" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d3c7860d0520c47edef6fb50119dcdec75ff0ba6efeaec220d5f19f9069108c
[INFO] running `Command { std: "docker" "start" "-a" "5d3c7860d0520c47edef6fb50119dcdec75ff0ba6efeaec220d5f19f9069108c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d3c7860d0520c47edef6fb50119dcdec75ff0ba6efeaec220d5f19f9069108c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d3c7860d0520c47edef6fb50119dcdec75ff0ba6efeaec220d5f19f9069108c", kill_on_drop: false }`
[INFO] [stdout] 5d3c7860d0520c47edef6fb50119dcdec75ff0ba6efeaec220d5f19f9069108c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e622bf43f9be08d30a04c051b13865c49478bbdd74059a0d3fd8e0642544cc19
[INFO] running `Command { std: "docker" "start" "-a" "e622bf43f9be08d30a04c051b13865c49478bbdd74059a0d3fd8e0642544cc19", kill_on_drop: false }`
[INFO] [stderr]     Checking cache v0.1.0 (/opt/rustwide/workdir/cache)
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> cache/src/sharable_cache.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::{Deref, DerefMut}, sync::{Mutex, RwLock}};
[INFO] [stdout]   |                 ^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> cache/src/sharable_cache.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::{Deref, DerefMut}, sync::{Mutex, RwLock}};
[INFO] [stdout]   |                 ^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LockBasedShareableCache` is never constructed
[INFO] [stdout]   --> cache/src/sharable_cache.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct LockBasedShareableCache<Cache> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locked_cache` is never used
[INFO] [stdout]   --> cache/src/sharable_cache.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn locked_cache<Cache, Key, Value>(cache: Cache) -> LockBasedShareableCache<Cache> 
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LockBasedShareableCache` is never constructed
[INFO] [stdout]   --> cache/src/sharable_cache.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct LockBasedShareableCache<Cache> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locked_cache` is never used
[INFO] [stdout]   --> cache/src/sharable_cache.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn locked_cache<Cache, Key, Value>(cache: Cache) -> LockBasedShareableCache<Cache> 
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking seive_cache v0.1.0 (/opt/rustwide/workdir/seive_cache)
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> seive_cache/src/node.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Arc
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> seive_cache/src/node.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Arc
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "e622bf43f9be08d30a04c051b13865c49478bbdd74059a0d3fd8e0642544cc19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e622bf43f9be08d30a04c051b13865c49478bbdd74059a0d3fd8e0642544cc19", kill_on_drop: false }`
[INFO] [stdout] e622bf43f9be08d30a04c051b13865c49478bbdd74059a0d3fd8e0642544cc19