[INFO] cloning repository https://github.com/wassimans/algorithmic-thinking-Zingaro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wassimans/algorithmic-thinking-Zingaro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwassimans%2Falgorithmic-thinking-Zingaro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwassimans%2Falgorithmic-thinking-Zingaro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b20d0b7b444e5426439e03258fc58b47336a315e
[INFO] checking wassimans/algorithmic-thinking-Zingaro against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwassimans%2Falgorithmic-thinking-Zingaro" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wassimans/algorithmic-thinking-Zingaro
[INFO] finished tweaking git repo https://github.com/wassimans/algorithmic-thinking-Zingaro
[INFO] tweaked toml for git repo https://github.com/wassimans/algorithmic-thinking-Zingaro written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wassimans/algorithmic-thinking-Zingaro on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wassimans/algorithmic-thinking-Zingaro 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cd1f52cfe0ef90f8570f88250285899317296bcf51f1e25606debb6aef0f37d
[INFO] running `Command { std: "docker" "start" "-a" "0cd1f52cfe0ef90f8570f88250285899317296bcf51f1e25606debb6aef0f37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cd1f52cfe0ef90f8570f88250285899317296bcf51f1e25606debb6aef0f37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd1f52cfe0ef90f8570f88250285899317296bcf51f1e25606debb6aef0f37d", kill_on_drop: false }`
[INFO] [stdout] 0cd1f52cfe0ef90f8570f88250285899317296bcf51f1e25606debb6aef0f37d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 998c65967aca44fec52fc611073f3277427ae00a9d9dc0a38660ced6b1cf78e4
[INFO] running `Command { std: "docker" "start" "-a" "998c65967aca44fec52fc611073f3277427ae00a9d9dc0a38660ced6b1cf78e4", kill_on_drop: false }`
[INFO] [stderr]     Checking stack v0.0.0 (/opt/rustwide/workdir/stack)
[INFO] [stderr]     Checking queue v0.0.0 (/opt/rustwide/workdir/queue)
[INFO] [stderr]     Checking hashmap v0.1.0 (/opt/rustwide/workdir/hashmap)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> stack/src/stack.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn iter(&self) -> std::iter::Rev<std::slice::Iter<T>> {
[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] 106 |     pub fn iter(&self) -> std::iter::Rev<std::slice::Iter<'_, T>> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> stack/src/stack.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn iter_mut(&mut self) -> std::iter::Rev<std::slice::IterMut<T>> {
[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] 110 |     pub fn iter_mut(&mut self) -> std::iter::Rev<std::slice::IterMut<'_, T>> {
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> stack/src/stack.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn iter(&self) -> std::iter::Rev<std::slice::Iter<T>> {
[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] 106 |     pub fn iter(&self) -> std::iter::Rev<std::slice::Iter<'_, T>> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> stack/src/stack.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn iter_mut(&mut self) -> std::iter::Rev<std::slice::IterMut<T>> {
[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] 110 |     pub fn iter_mut(&mut self) -> std::iter::Rev<std::slice::IterMut<'_, T>> {
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "998c65967aca44fec52fc611073f3277427ae00a9d9dc0a38660ced6b1cf78e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "998c65967aca44fec52fc611073f3277427ae00a9d9dc0a38660ced6b1cf78e4", kill_on_drop: false }`
[INFO] [stdout] 998c65967aca44fec52fc611073f3277427ae00a9d9dc0a38660ced6b1cf78e4