[INFO] fetching crate fast_log 1.3.14...
[INFO] checking fast_log-1.3.14 against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] extracting crate fast_log 1.3.14 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fast_log 1.3.14 on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fast_log 1.3.14
[INFO] finished tweaking crates.io crate fast_log 1.3.14
[INFO] tweaked toml for crates.io crate fast_log 1.3.14 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 606e19834377837f345f4f617a1188a6b500d6121b9622bdaee918e2cf4c378c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "606e19834377837f345f4f617a1188a6b500d6121b9622bdaee918e2cf4c378c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "606e19834377837f345f4f617a1188a6b500d6121b9622bdaee918e2cf4c378c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "606e19834377837f345f4f617a1188a6b500d6121b9622bdaee918e2cf4c378c", kill_on_drop: false }`
[INFO] [stdout] 606e19834377837f345f4f617a1188a6b500d6121b9622bdaee918e2cf4c378c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d9b5ef0de047c43a879812e33241efb998bff6e7b232b261aac51bc68103b7de
[INFO] running `Command { std: "docker" "start" "-a" "d9b5ef0de047c43a879812e33241efb998bff6e7b232b261aac51bc68103b7de", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking zip v0.5.9
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking fast_log v1.3.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/plugin/file_split.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crossbeam_channel::{Receiver, RecvError, Sender};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/plugin/file_split.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crossbeam_channel::{Receiver, RecvError, Sender};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `e`
[INFO] [stdout]   --> src/error.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn e() -> Result<String, LogError> {
[INFO] [stdout]    |    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.73s
[INFO] running `Command { std: "docker" "inspect" "d9b5ef0de047c43a879812e33241efb998bff6e7b232b261aac51bc68103b7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b5ef0de047c43a879812e33241efb998bff6e7b232b261aac51bc68103b7de", kill_on_drop: false }`
[INFO] [stdout] d9b5ef0de047c43a879812e33241efb998bff6e7b232b261aac51bc68103b7de