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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
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[INFO] building praise2112/abbreviation-extractor against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpraise2112%2Fabbreviation-extractor" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/praise2112/abbreviation-extractor on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
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[INFO] started tweaking git repo https://github.com/praise2112/abbreviation-extractor
[INFO] finished tweaking git repo https://github.com/praise2112/abbreviation-extractor
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[INFO] crate git repo https://github.com/praise2112/abbreviation-extractor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "55db3497a71a06c97a7e0fe499a25212a586dbccf69a2fb19cbc8a0322d1c0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55db3497a71a06c97a7e0fe499a25212a586dbccf69a2fb19cbc8a0322d1c0ad", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b174088f4374684269df007742cf3f0a9500796dd3ab68e598bb5703a373f422
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[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/extraction.rs:613:34
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate> {
[INFO] [stdout]     |                                  ^^^^         --------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate<'_>> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.04s
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[INFO] [stdout] b174088f4374684269df007742cf3f0a9500796dd3ab68e598bb5703a373f422
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c78c62348610a184c5b9724fc119661acc8e6fca31434098af571e34fd557bc7
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[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/extraction.rs:613:34
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate> {
[INFO] [stdout]     |                                  ^^^^         --------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate<'_>> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling flamegraph v0.6.5
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/extraction.rs:613:34
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate> {
[INFO] [stdout]     |                                  ^^^^         --------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 613 | pub fn best_candidates(sentence: &str) -> Vec<Candidate<'_>> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 23.45s
[INFO] running `Command { std: "docker" "inspect" "c78c62348610a184c5b9724fc119661acc8e6fca31434098af571e34fd557bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c78c62348610a184c5b9724fc119661acc8e6fca31434098af571e34fd557bc7", kill_on_drop: false }`
[INFO] [stdout] c78c62348610a184c5b9724fc119661acc8e6fca31434098af571e34fd557bc7