[INFO] fetching crate mdbook_rash 2.16.1...
[INFO] checking mdbook_rash-2.16.1 against master#ddaf12390d3ffb7d5ba74491a48f3cd528e5d777 for pr-146504
[INFO] extracting crate mdbook_rash 2.16.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mdbook_rash 2.16.1
[INFO] finished tweaking crates.io crate mdbook_rash 2.16.1
[INFO] tweaked toml for crates.io crate mdbook_rash 2.16.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook_rash 2.16.1 on toolchain ddaf12390d3ffb7d5ba74491a48f3cd528e5d777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook_rash 2.16.1 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" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_home v0.1.0
[INFO] [stderr]   Downloaded rustify_derive v0.5.4
[INFO] [stderr]   Downloaded rustify v0.6.1
[INFO] [stderr]   Downloaded which v7.0.3
[INFO] [stderr]   Downloaded rash_core v2.16.1
[INFO] [stderr]   Downloaded memo-map v0.3.3
[INFO] [stderr]   Downloaded git-state v0.1.0
[INFO] [stderr]   Downloaded prs-lib v0.5.2
[INFO] [stderr]   Downloaded schemars_derive v1.0.3
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[INFO] [stderr]   Downloaded vaultrs v0.7.4
[INFO] [stderr]   Downloaded ofiles v0.2.0
[INFO] [stderr]   Downloaded ipc-channel v0.20.0
[INFO] [stderr]   Downloaded mdbook v0.4.51
[INFO] [stderr]   Downloaded rash_derive v2.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2712324494ddde150d48718cfc4978e4ff5063fa7706f8c1f79dd0bfe27e956a
[INFO] running `Command { std: "docker" "start" "-a" "2712324494ddde150d48718cfc4978e4ff5063fa7706f8c1f79dd0bfe27e956a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2712324494ddde150d48718cfc4978e4ff5063fa7706f8c1f79dd0bfe27e956a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2712324494ddde150d48718cfc4978e4ff5063fa7706f8c1f79dd0bfe27e956a", kill_on_drop: false }`
[INFO] [stdout] 2712324494ddde150d48718cfc4978e4ff5063fa7706f8c1f79dd0bfe27e956a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac9f2c436233d6553352cc87b11fbd787ecd9c098ee4bbc3234eb95f7a0955db
[INFO] running `Command { std: "docker" "start" "-a" "ac9f2c436233d6553352cc87b11fbd787ecd9c098ee4bbc3234eb95f7a0955db", kill_on_drop: false }`
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[INFO] [stderr]     Checking mdbook_rash v2.16.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_matches(ch: &Chapter) -> Option<Vec<(Match, Option<String>, String)>> {
[INFO] [stdout]    |                    ^^^^^^^^                 ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_matches(ch: &Chapter) -> Option<Vec<(Match<'_>, Option<String>, String)>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_matches(ch: &Chapter) -> Option<Vec<(Match, Option<String>, String)>> {
[INFO] [stdout]    |                    ^^^^^^^^                 ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_matches(ch: &Chapter) -> Option<Vec<(Match<'_>, Option<String>, String)>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "ac9f2c436233d6553352cc87b11fbd787ecd9c098ee4bbc3234eb95f7a0955db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac9f2c436233d6553352cc87b11fbd787ecd9c098ee4bbc3234eb95f7a0955db", kill_on_drop: false }`
[INFO] [stdout] ac9f2c436233d6553352cc87b11fbd787ecd9c098ee4bbc3234eb95f7a0955db