[INFO] fetching crate arena-alloc 0.1.2...
[INFO] checking arena-alloc-0.1.2 against master#040e2f8b9ff2d76fbe2146d6003e297ed4532088 for pr-143619
[INFO] extracting crate arena-alloc 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate arena-alloc 0.1.2
[INFO] finished tweaking crates.io crate arena-alloc 0.1.2
[INFO] tweaked toml for crates.io crate arena-alloc 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arena-alloc 0.1.2 on toolchain 040e2f8b9ff2d76fbe2146d6003e297ed4532088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bbb56b37ae967a6c6d9781e69b6ab8c11e83adeb638a980be1b8d48933397ab
[INFO] running `Command { std: "docker" "start" "-a" "9bbb56b37ae967a6c6d9781e69b6ab8c11e83adeb638a980be1b8d48933397ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bbb56b37ae967a6c6d9781e69b6ab8c11e83adeb638a980be1b8d48933397ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bbb56b37ae967a6c6d9781e69b6ab8c11e83adeb638a980be1b8d48933397ab", kill_on_drop: false }`
[INFO] [stdout] 9bbb56b37ae967a6c6d9781e69b6ab8c11e83adeb638a980be1b8d48933397ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 683390b1eafe2c14a17b4476251c56c91e836377345817c37da7b2c050505f92
[INFO] running `Command { std: "docker" "start" "-a" "683390b1eafe2c14a17b4476251c56c91e836377345817c37da7b2c050505f92", kill_on_drop: false }`
[INFO] [stderr]     Checking arena-alloc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:114:26
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn get_ptr_place<T>(&'a self) -> Option<(usize, &mut MaybeUninit<T>)> {
[INFO] [stdout]     |                          ^^                         ------------------- the lifetime gets resolved as `'a`
[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 consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn get_ptr_place<T>(&'a self) -> Option<(usize, &'a mut MaybeUninit<T>)> {
[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:114:26
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn get_ptr_place<T>(&'a self) -> Option<(usize, &mut MaybeUninit<T>)> {
[INFO] [stdout]     |                          ^^                         ------------------- the lifetime gets resolved as `'a`
[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 consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn get_ptr_place<T>(&'a self) -> Option<(usize, &'a mut MaybeUninit<T>)> {
[INFO] [stdout]     |                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "683390b1eafe2c14a17b4476251c56c91e836377345817c37da7b2c050505f92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "683390b1eafe2c14a17b4476251c56c91e836377345817c37da7b2c050505f92", kill_on_drop: false }`
[INFO] [stdout] 683390b1eafe2c14a17b4476251c56c91e836377345817c37da7b2c050505f92