[INFO] updating cached repository https://github.com/ChijinZ/rust_test
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62aa884b295f1580ccd42e446a9cda52ff9eff0b
[INFO] checking ChijinZ/rust_test against try#f503dc8e6998ec30e0e3a3937c0fd18331a5dc9f for pr-69560
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChijinZ%2Frust_test" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChijinZ/rust_test on toolchain f503dc8e6998ec30e0e3a3937c0fd18331a5dc9f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f503dc8e6998ec30e0e3a3937c0fd18331a5dc9f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ChijinZ/rust_test
[INFO] finished tweaking git repo https://github.com/ChijinZ/rust_test
[INFO] tweaked toml for git repo https://github.com/ChijinZ/rust_test written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ChijinZ/rust_test already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f503dc8e6998ec30e0e3a3937c0fd18331a5dc9f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+f503dc8e6998ec30e0e3a3937c0fd18331a5dc9f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d36fe3c32079ada95cd2e139fa5cb9b4c0d874773556648dc58ff90f7c5d8a61
[INFO] running `"docker" "start" "-a" "d36fe3c32079ada95cd2e139fa5cb9b4c0d874773556648dc58ff90f7c5d8a61"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking mio-named-pipes v0.1.6
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]     Checking theban_interval_tree v0.7.1
[INFO] [stderr]     Checking nix v0.10.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.4
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.2
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-fs v0.1.1
[INFO] [stderr]     Checking tokio-udp v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-uds v0.2.0
[INFO] [stderr]     Checking tokio-signal v0.2.1
[INFO] [stderr]     Checking tokio-process v0.2.2
[INFO] [stderr]     Checking tokio v0.1.7
[INFO] [stderr]     Checking msg-transmitter v0.3.0
[INFO] [stderr]     Checking shared_memory v0.8.0
[INFO] [stderr]     Checking rust_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.95s
[INFO] running `"docker" "inspect" "d36fe3c32079ada95cd2e139fa5cb9b4c0d874773556648dc58ff90f7c5d8a61"`
[INFO] running `"docker" "rm" "-f" "d36fe3c32079ada95cd2e139fa5cb9b4c0d874773556648dc58ff90f7c5d8a61"`
[INFO] [stdout] d36fe3c32079ada95cd2e139fa5cb9b4c0d874773556648dc58ff90f7c5d8a61