[INFO] fetching crate sixarm_collections 1.1.1...
[INFO] checking sixarm_collections-1.1.1 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate sixarm_collections 1.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate sixarm_collections 1.1.1 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sixarm_collections 1.1.1
[INFO] finished tweaking crates.io crate sixarm_collections 1.1.1
[INFO] tweaked toml for crates.io crate sixarm_collections 1.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sixarm_assert v1.1.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", 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] ce7a1b7d9475a7913af4975bee0206e2d05ca0d852ca080e6e0eb37a9eacbdb0
[INFO] running `Command { std: "docker" "start" "-a" "ce7a1b7d9475a7913af4975bee0206e2d05ca0d852ca080e6e0eb37a9eacbdb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce7a1b7d9475a7913af4975bee0206e2d05ca0d852ca080e6e0eb37a9eacbdb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce7a1b7d9475a7913af4975bee0206e2d05ca0d852ca080e6e0eb37a9eacbdb0", kill_on_drop: false }`
[INFO] [stdout] ce7a1b7d9475a7913af4975bee0206e2d05ca0d852ca080e6e0eb37a9eacbdb0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "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] 275723dbeb62b154bf8d3ef1fc15fb849312efb2780e19675293260c1b7bf6e1
[INFO] running `Command { std: "docker" "start" "-a" "275723dbeb62b154bf8d3ef1fc15fb849312efb2780e19675293260c1b7bf6e1", kill_on_drop: false }`
[INFO] [stderr]     Checking sixarm_assert v1.1.1
[INFO] [stderr]     Checking sixarm_collections v1.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sixarm_assert::*`
[INFO] [stdout]    --> src/btree_map_of_file_len_to_set_of_path_buf.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |     use sixarm_assert::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sixarm_assert::*`
[INFO] [stdout]    --> src/hash_map_of_file_len_to_set_of_path_buf.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |     use sixarm_assert::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "275723dbeb62b154bf8d3ef1fc15fb849312efb2780e19675293260c1b7bf6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275723dbeb62b154bf8d3ef1fc15fb849312efb2780e19675293260c1b7bf6e1", kill_on_drop: false }`
[INFO] [stdout] 275723dbeb62b154bf8d3ef1fc15fb849312efb2780e19675293260c1b7bf6e1