[INFO] crate debug_tree 0.3.1 is already in cache
[INFO] checking debug_tree-0.3.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate debug_tree 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate debug_tree 0.3.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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-0/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 240266bb7351d87f659e60e834c3b4444c3712edefb2dc094dc8d322ee47cd5e
[INFO] running `"docker" "start" "-a" "240266bb7351d87f659e60e834c3b4444c3712edefb2dc094dc8d322ee47cd5e"`
[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 18.15s
[INFO] running `"docker" "inspect" "240266bb7351d87f659e60e834c3b4444c3712edefb2dc094dc8d322ee47cd5e"`
[INFO] running `"docker" "rm" "-f" "240266bb7351d87f659e60e834c3b4444c3712edefb2dc094dc8d322ee47cd5e"`
[INFO] [stdout] 240266bb7351d87f659e60e834c3b4444c3712edefb2dc094dc8d322ee47cd5e