[INFO] crate ntree 0.1.0 is already in cache
[INFO] testing ntree-0.1.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate ntree 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ntree 0.1.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ntree 0.1.0
[INFO] finished tweaking crates.io crate ntree 0.1.0
[INFO] tweaked toml for crates.io crate ntree 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a2f46a4ae4cfd3bbf4229f5193588f81d7751c4ed55b0d86bdc2c7d809c4f265
[INFO] running `"docker" "start" "-a" "a2f46a4ae4cfd3bbf4229f5193588f81d7751c4ed55b0d86bdc2c7d809c4f265"`
[INFO] [stderr]    Compiling ref_slice v1.2.0
[INFO] [stderr]    Compiling ntree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |                 'children: loop {
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "a2f46a4ae4cfd3bbf4229f5193588f81d7751c4ed55b0d86bdc2c7d809c4f265"`
[INFO] running `"docker" "rm" "-f" "a2f46a4ae4cfd3bbf4229f5193588f81d7751c4ed55b0d86bdc2c7d809c4f265"`
[INFO] [stdout] a2f46a4ae4cfd3bbf4229f5193588f81d7751c4ed55b0d86bdc2c7d809c4f265
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1c92306b36b0175cdc29b8711cfe3f41a4bdb5801e747ef4a42c196daea58b7
[INFO] running `"docker" "start" "-a" "d1c92306b36b0175cdc29b8711cfe3f41a4bdb5801e747ef4a42c196daea58b7"`
[INFO] [stderr]    Compiling ntree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |                 'children: loop {
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: unused label
[INFO] [stderr]    --> src/lib.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |                 'children: loop {
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:2:24
[INFO] [stderr]     |
[INFO] [stderr] 2   | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(unused_labels)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: unused import: `Region`
[INFO] [stderr]   --> src/test.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 | use {NTree, Region};
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:2:24
[INFO] [stderr]    |
[INFO] [stderr] 2  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `ntree`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d1c92306b36b0175cdc29b8711cfe3f41a4bdb5801e747ef4a42c196daea58b7"`
[INFO] running `"docker" "rm" "-f" "d1c92306b36b0175cdc29b8711cfe3f41a4bdb5801e747ef4a42c196daea58b7"`
[INFO] [stdout] d1c92306b36b0175cdc29b8711cfe3f41a4bdb5801e747ef4a42c196daea58b7