[INFO] fetching crate env2js 1.0.1...
[INFO] checking env2js-1.0.1 against 0c3b2c226322b623e493b7611e4909ee6bc6a48d for pr-161946
[INFO] extracting crate env2js 1.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate env2js 1.0.1
[INFO] finished tweaking crates.io crate env2js 1.0.1
[INFO] tweaked toml for crates.io crate env2js 1.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate env2js 1.0.1 on toolchain 0c3b2c226322b623e493b7611e4909ee6bc6a48d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate env2js 1.0.1 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" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "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 env2js-1.0.1 against 0c3b2c226322b623e493b7611e4909ee6bc6a48d for pr-161946
[INFO] extracting crate env2js 1.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate env2js 1.0.1
[INFO] finished tweaking crates.io crate env2js 1.0.1
[INFO] tweaked toml for crates.io crate env2js 1.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate env2js 1.0.1 on toolchain 0c3b2c226322b623e493b7611e4909ee6bc6a48d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate env2js 1.0.1 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" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded ryu v1.0.2
[INFO] [stderr]   Downloaded serde_json v1.0.48
[INFO] [stderr]   Downloaded hermit-abi v0.1.7
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded serde v1.0.104
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded libc v0.2.67
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5
[INFO] running `Command { std: "docker" "start" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5" "/opt/rustwide/cargo-home/bin/cargo" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5" "/opt/rustwide/cargo-home/bin/cargo" "+0c3b2c226322b623e493b7611e4909ee6bc6a48d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking env2js v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             (prefix.is_none()
[INFO] [stdout]    |             ^
[INFO] [stdout] 65 |                 || prefix.is_some() && k.starts_with(prefix.as_deref().unwrap()) == true)
[INFO] [stdout]    |                                                                                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 64 ~             prefix.is_none()
[INFO] [stdout] 65 ~                 || prefix.is_some() && k.starts_with(prefix.as_deref().unwrap()) == true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             (prefix.is_none()
[INFO] [stdout]    |             ^
[INFO] [stdout] 65 |                 || prefix.is_some() && k.starts_with(prefix.as_deref().unwrap()) == true)
[INFO] [stdout]    |                                                                                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 64 ~             prefix.is_none()
[INFO] [stdout] 65 ~                 || prefix.is_some() && k.starts_with(prefix.as_deref().unwrap()) == true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `Command { std: "docker" "inspect" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5", kill_on_drop: false }`
[INFO] [stdout] 265286fb2fb9ea23f1230a20d54d1beda64f371e155390389d43c4e0860915b5