[INFO] fetching crate rlfsc 0.2.2...
[INFO] checking rlfsc-0.2.2 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate rlfsc 0.2.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate rlfsc 0.2.2
[INFO] finished tweaking crates.io crate rlfsc 0.2.2
[INFO] tweaked toml for crates.io crate rlfsc 0.2.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rlfsc 0.2.2 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rlfsc 0.2.2 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.24
[INFO] [stderr]   Downloaded logos v0.11.4
[INFO] [stderr]   Downloaded thiserror-impl v1.0.24
[INFO] [stderr]   Downloaded rlimit v0.4.0
[INFO] [stderr]   Downloaded az v1.1.0
[INFO] [stderr]   Downloaded yansi v0.5.0
[INFO] [stderr]   Downloaded utf8-ranges v1.0.4
[INFO] [stderr]   Downloaded logos-derive v0.11.5
[INFO] [stderr]   Downloaded rug v1.11.0
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.3
[INFO] [stderr]   Downloaded beef v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47f3dd03bf2c65517866e9c07f8a5b4947f7da465728158c9ba45b4a0ff1a47c
[INFO] running `Command { std: "docker" "start" "-a" "47f3dd03bf2c65517866e9c07f8a5b4947f7da465728158c9ba45b4a0ff1a47c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47f3dd03bf2c65517866e9c07f8a5b4947f7da465728158c9ba45b4a0ff1a47c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47f3dd03bf2c65517866e9c07f8a5b4947f7da465728158c9ba45b4a0ff1a47c", kill_on_drop: false }`
[INFO] [stdout] 47f3dd03bf2c65517866e9c07f8a5b4947f7da465728158c9ba45b4a0ff1a47c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd174286bc4fd4f4d7d979c0ef4f0f74d142d7c3998c73dcfa1c81d5f379f04e
[INFO] running `Command { std: "docker" "start" "-a" "cd174286bc4fd4f4d7d979c0ef4f0f74d142d7c3998c73dcfa1c81d5f379f04e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rug v1.11.0
[INFO] [stderr]    Compiling beef v0.4.4
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rlimit v0.4.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling logos-derive v0.11.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking logos v0.11.4
[INFO] [stderr]     Checking rlfsc v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]    --> src/token.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 | struct Level<'a> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]    --> src/token.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 | struct Level<'a> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `Command { std: "docker" "inspect" "cd174286bc4fd4f4d7d979c0ef4f0f74d142d7c3998c73dcfa1c81d5f379f04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd174286bc4fd4f4d7d979c0ef4f0f74d142d7c3998c73dcfa1c81d5f379f04e", kill_on_drop: false }`
[INFO] [stdout] cd174286bc4fd4f4d7d979c0ef4f0f74d142d7c3998c73dcfa1c81d5f379f04e