[INFO] crate debug_tree 0.3.1 is already in cache
[INFO] checking debug_tree-0.3.1 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate debug_tree 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate debug_tree 0.3.1 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate debug_tree 0.3.1
[INFO] finished tweaking crates.io crate debug_tree 0.3.1
[INFO] tweaked toml for crates.io crate debug_tree 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate debug_tree 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3e20cb81b8a09d7a1b3b8983df37038d92924141a263a7e2ef7c99f65740fd9e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3e20cb81b8a09d7a1b3b8983df37038d92924141a263a7e2ef7c99f65740fd9e"`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking debug_tree v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro-hack v0.5.12
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr] warning: unused imports: `max`, `min`
[INFO] [stderr]  --> src/test.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     use std::cmp::{max, min};
[INFO] [stderr]   |                    ^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.09s
[INFO] running `"docker" "inspect" "3e20cb81b8a09d7a1b3b8983df37038d92924141a263a7e2ef7c99f65740fd9e"`
[INFO] running `"docker" "rm" "-f" "3e20cb81b8a09d7a1b3b8983df37038d92924141a263a7e2ef7c99f65740fd9e"`
[INFO] [stdout] 3e20cb81b8a09d7a1b3b8983df37038d92924141a263a7e2ef7c99f65740fd9e