[INFO] fetching crate mdbook_rash 2.16.1...
[INFO] checking mdbook_rash-2.16.1 against master#f21fbac535ab2c3bc50db20547f4d48477357103 for pr-143193
[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 f21fbac535ab2c3bc50db20547f4d48477357103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "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" "+f21fbac535ab2c3bc50db20547f4d48477357103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8d4dfba861641cfb784895a21f69d0ae398fed1bf9da0647d39ec03a6768869
[INFO] running `Command { std: "docker" "start" "-a" "e8d4dfba861641cfb784895a21f69d0ae398fed1bf9da0647d39ec03a6768869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8d4dfba861641cfb784895a21f69d0ae398fed1bf9da0647d39ec03a6768869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d4dfba861641cfb784895a21f69d0ae398fed1bf9da0647d39ec03a6768869", kill_on_drop: false }`
[INFO] [stdout] e8d4dfba861641cfb784895a21f69d0ae398fed1bf9da0647d39ec03a6768869
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85a850b804ca5c60635aa1ac6a5a21c9ce1c94cecae9fff49560186a4415a8bd
[INFO] running `Command { std: "docker" "start" "-a" "85a850b804ca5c60635aa1ac6a5a21c9ce1c94cecae9fff49560186a4415a8bd", kill_on_drop: false }`
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[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be 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 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] 42 | fn get_matches(ch: &Chapter) -> Option<Vec<(Match<'_>, Option<String>, String)>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be 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 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] 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 01s
[INFO] running `Command { std: "docker" "inspect" "85a850b804ca5c60635aa1ac6a5a21c9ce1c94cecae9fff49560186a4415a8bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85a850b804ca5c60635aa1ac6a5a21c9ce1c94cecae9fff49560186a4415a8bd", kill_on_drop: false }`
[INFO] [stdout] 85a850b804ca5c60635aa1ac6a5a21c9ce1c94cecae9fff49560186a4415a8bd