[INFO] cloning repository https://github.com/VictorGerin/leetcode_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VictorGerin/leetcode_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorGerin%2Fleetcode_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorGerin%2Fleetcode_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e797942f057714e1cc8303f37dc5e2b5cb3ec53
[INFO] checking VictorGerin/leetcode_rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorGerin%2Fleetcode_rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VictorGerin/leetcode_rs
[INFO] finished tweaking git repo https://github.com/VictorGerin/leetcode_rs
[INFO] tweaked toml for git repo https://github.com/VictorGerin/leetcode_rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VictorGerin/leetcode_rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/VictorGerin/leetcode_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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd8327c75f835065b21ceca0eb97256b0eecd3ae4a3791b1bb6c7f0708bfc863
[INFO] running `Command { std: "docker" "start" "-a" "dd8327c75f835065b21ceca0eb97256b0eecd3ae4a3791b1bb6c7f0708bfc863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd8327c75f835065b21ceca0eb97256b0eecd3ae4a3791b1bb6c7f0708bfc863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8327c75f835065b21ceca0eb97256b0eecd3ae4a3791b1bb6c7f0708bfc863", kill_on_drop: false }`
[INFO] [stdout] dd8327c75f835065b21ceca0eb97256b0eecd3ae4a3791b1bb6c7f0708bfc863
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3baf4c9e1626fabadf5de95ba6fce21983c4096ef3c598c3e62b808195e2dce
[INFO] running `Command { std: "docker" "start" "-a" "b3baf4c9e1626fabadf5de95ba6fce21983c4096ef3c598c3e62b808195e2dce", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> lib/src/data_structures/list_node.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn iter(&self) -> ListNodeIterRef {
[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] 18 |     pub fn iter(&self) -> ListNodeIterRef<'_> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> lib/src/data_structures/list_node.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn iter_mut(&mut self) -> ListNodeIterRefMut {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn iter_mut(&mut self) -> ListNodeIterRefMut<'_> {
[INFO] [stdout]    |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sort_array_912 v0.1.0 (/opt/rustwide/workdir/sort_array_912)
[INFO] [stderr]     Checking integer_to_roman_12 v0.1.0 (/opt/rustwide/workdir/integer_to_roman_12)
[INFO] [stderr]     Checking longest_word_in_dictionary_524 v0.1.0 (/opt/rustwide/workdir/longest_word_in_dictionary_524)
[INFO] [stderr]     Checking most_frequent_prime_3044 v0.1.0 (/opt/rustwide/workdir/most_frequent_prime_3044)
[INFO] [stderr]     Checking number_of_ways_where_square_of_number_is_equal_to_product_1577 v0.1.0 (/opt/rustwide/workdir/number_of_ways_where_square_of_number_is_equal_to_product_1577)
[INFO] [stderr]     Checking maximum_ascending_subarray_sum_1800 v0.1.0 (/opt/rustwide/workdir/maximum_ascending_subarray_sum_1800)
[INFO] [stderr]     Checking sum_two_numbers v0.1.0 (/opt/rustwide/workdir/sum_two_numbers)
[INFO] [stderr]     Checking leetcode_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> lib/src/data_structures/list_node.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn iter(&self) -> ListNodeIterRef {
[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] 18 |     pub fn iter(&self) -> ListNodeIterRef<'_> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> lib/src/data_structures/list_node.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn iter_mut(&mut self) -> ListNodeIterRefMut {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn iter_mut(&mut self) -> ListNodeIterRefMut<'_> {
[INFO] [stdout]    |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "b3baf4c9e1626fabadf5de95ba6fce21983c4096ef3c598c3e62b808195e2dce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3baf4c9e1626fabadf5de95ba6fce21983c4096ef3c598c3e62b808195e2dce", kill_on_drop: false }`
[INFO] [stdout] b3baf4c9e1626fabadf5de95ba6fce21983c4096ef3c598c3e62b808195e2dce