[INFO] cloning repository https://github.com/gfaster/genvec-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gfaster/genvec-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfaster%2Fgenvec-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfaster%2Fgenvec-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d1ec2197d0bcec2a519f302c24faf0e2d36f762
[INFO] checking gfaster/genvec-rs against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfaster%2Fgenvec-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gfaster/genvec-rs
[INFO] finished tweaking git repo https://github.com/gfaster/genvec-rs
[INFO] tweaked toml for git repo https://github.com/gfaster/genvec-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gfaster/genvec-rs on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gfaster/genvec-rs 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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_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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b537ba571a0583ee48c5d0fccfb039f87b61e06422fdf55f2cd1c1934f367db
[INFO] running `Command { std: "docker" "start" "-a" "3b537ba571a0583ee48c5d0fccfb039f87b61e06422fdf55f2cd1c1934f367db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b537ba571a0583ee48c5d0fccfb039f87b61e06422fdf55f2cd1c1934f367db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b537ba571a0583ee48c5d0fccfb039f87b61e06422fdf55f2cd1c1934f367db", kill_on_drop: false }`
[INFO] [stdout] 3b537ba571a0583ee48c5d0fccfb039f87b61e06422fdf55f2cd1c1934f367db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca207a36ef9dd51e51fd7d8ff39709942efa4a1173b429a8b25a8c5492affaf8
[INFO] running `Command { std: "docker" "start" "-a" "ca207a36ef9dd51e51fd7d8ff39709942efa4a1173b429a8b25a8c5492affaf8", kill_on_drop: false }`
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking genvec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/simple.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn alloc(&self, item: T) -> Result<Ref<T>, T> {
[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] 105 |     pub fn alloc(&self, item: T) -> Result<Ref<'_, T>, 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/sync.rs:290:18
[INFO] [stdout]     |
[INFO] [stdout] 290 |     pub fn alloc(&self, item: T) -> Ref<T> {
[INFO] [stdout]     |                  ^^^^^              ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 290 |     pub fn alloc(&self, item: T) -> Ref<'_, 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/simple.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn alloc(&self, item: T) -> Result<Ref<T>, T> {
[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] 105 |     pub fn alloc(&self, item: T) -> Result<Ref<'_, T>, 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/sync.rs:290:18
[INFO] [stdout]     |
[INFO] [stdout] 290 |     pub fn alloc(&self, item: T) -> Ref<T> {
[INFO] [stdout]     |                  ^^^^^              ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 290 |     pub fn alloc(&self, item: T) -> Ref<'_, T> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "ca207a36ef9dd51e51fd7d8ff39709942efa4a1173b429a8b25a8c5492affaf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca207a36ef9dd51e51fd7d8ff39709942efa4a1173b429a8b25a8c5492affaf8", kill_on_drop: false }`
[INFO] [stdout] ca207a36ef9dd51e51fd7d8ff39709942efa4a1173b429a8b25a8c5492affaf8