[INFO] cloning repository https://github.com/sacha-renault/raw-double-linked-list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sacha-renault/raw-double-linked-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsacha-renault%2Fraw-double-linked-list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsacha-renault%2Fraw-double-linked-list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 521172c4cdfed3da5238277d31d8252e68db5bf2
[INFO] checking sacha-renault/raw-double-linked-list against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsacha-renault%2Fraw-double-linked-list" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sacha-renault/raw-double-linked-list
[INFO] finished tweaking git repo https://github.com/sacha-renault/raw-double-linked-list
[INFO] tweaked toml for git repo https://github.com/sacha-renault/raw-double-linked-list written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sacha-renault/raw-double-linked-list on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sacha-renault/raw-double-linked-list 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7de03bb449d04c21bad2d67339c1dc579b2608c2064f2e4ffcfeb8b6ba53984
[INFO] running `Command { std: "docker" "start" "-a" "a7de03bb449d04c21bad2d67339c1dc579b2608c2064f2e4ffcfeb8b6ba53984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7de03bb449d04c21bad2d67339c1dc579b2608c2064f2e4ffcfeb8b6ba53984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7de03bb449d04c21bad2d67339c1dc579b2608c2064f2e4ffcfeb8b6ba53984", kill_on_drop: false }`
[INFO] [stdout] a7de03bb449d04c21bad2d67339c1dc579b2608c2064f2e4ffcfeb8b6ba53984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a167c8a55f9116e4d63b0380835af5a74a0b46a8aa4b61842520627a5b68a34
[INFO] running `Command { std: "docker" "start" "-a" "1a167c8a55f9116e4d63b0380835af5a74a0b46a8aa4b61842520627a5b68a34", kill_on_drop: false }`
[INFO] [stderr]     Checking raw-double-linked-list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/list/linked_list.rs:286:17
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn iter(&self) -> ListIter<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] 286 |     pub fn iter(&self) -> ListIter<'_, 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/list/linked_list.rs:286:17
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn iter(&self) -> ListIter<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] 286 |     pub fn iter(&self) -> ListIter<'_, T> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "1a167c8a55f9116e4d63b0380835af5a74a0b46a8aa4b61842520627a5b68a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a167c8a55f9116e4d63b0380835af5a74a0b46a8aa4b61842520627a5b68a34", kill_on_drop: false }`
[INFO] [stdout] 1a167c8a55f9116e4d63b0380835af5a74a0b46a8aa4b61842520627a5b68a34