[INFO] updating cached repository https://github.com/soaxelbrooke/phrase
[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] 7066a421e12ef75c7dc49c39f2b596828fa504f9
[INFO] checking soaxelbrooke/phrase against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoaxelbrooke%2Fphrase" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soaxelbrooke/phrase on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/soaxelbrooke/phrase
[INFO] finished tweaking git repo https://github.com/soaxelbrooke/phrase
[INFO] tweaked toml for git repo https://github.com/soaxelbrooke/phrase written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/soaxelbrooke/phrase already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 9b40bef27b944f32210885cfcb42d630a2204cd5c1c74fcc4c17c3b741c5173f
[INFO] running `"docker" "start" "-a" "9b40bef27b944f32210885cfcb42d630a2204cd5c1c74fcc4c17c3b741c5173f"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling safemem v0.3.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.1
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[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling untrusted v0.6.2
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[INFO] [stderr]    Compiling typeable v0.1.2
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[INFO] [stderr]    Compiling ryu v1.0.1
[INFO] [stderr]    Compiling language-tags v0.2.2
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[INFO] [stderr]     Checking phrase v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `merge_ngrams_into_owned`
[INFO] [stderr]    --> src/main.rs:559:1
[INFO] [stderr]     |
[INFO] [stderr] 559 | fn merge_ngrams_into_owned(from: NGramCounts, into: &mut NGramCounts) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `label_valid`
[INFO] [stderr]     --> src/main.rs:1319:1
[INFO] [stderr]      |
[INFO] [stderr] 1319 | fn label_valid(label: &Option<&String>) -> bool {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_label_valid`
[INFO] [stderr]     --> src/main.rs:1328:1
[INFO] [stderr]      |
[INFO] [stderr] 1328 | fn assert_label_valid(label: &Option<&String>) {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:625:21
[INFO] [stderr]     |
[INFO] [stderr] 625 |                     ngrams[position].try_push_str(&delim);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_ngrams_into_owned`
[INFO] [stderr]    --> src/main.rs:559:1
[INFO] [stderr]     |
[INFO] [stderr] 559 | fn merge_ngrams_into_owned(from: NGramCounts, into: &mut NGramCounts) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `label_valid`
[INFO] [stderr]     --> src/main.rs:1319:1
[INFO] [stderr]      |
[INFO] [stderr] 1319 | fn label_valid(label: &Option<&String>) -> bool {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_label_valid`
[INFO] [stderr]     --> src/main.rs:1328:1
[INFO] [stderr]      |
[INFO] [stderr] 1328 | fn assert_label_valid(label: &Option<&String>) {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:625:21
[INFO] [stderr]     |
[INFO] [stderr] 625 |                     ngrams[position].try_push_str(&delim);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 45s
[INFO] running `"docker" "inspect" "9b40bef27b944f32210885cfcb42d630a2204cd5c1c74fcc4c17c3b741c5173f"`
[INFO] running `"docker" "rm" "-f" "9b40bef27b944f32210885cfcb42d630a2204cd5c1c74fcc4c17c3b741c5173f"`
[INFO] [stdout] 9b40bef27b944f32210885cfcb42d630a2204cd5c1c74fcc4c17c3b741c5173f