[INFO] cloning repository https://github.com/Frozen/hierarchy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Frozen/hierarchy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e43b6ec362026353024196540157938f151785de
[INFO] checking Frozen/hierarchy against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frozen/hierarchy on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Frozen/hierarchy
[INFO] finished tweaking git repo https://github.com/Frozen/hierarchy
[INFO] tweaked toml for git repo https://github.com/Frozen/hierarchy written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Frozen/hierarchy 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 352e84bd81cfc4f23bee0c9da43eb17921bb66fbcd5c00742c57cf771c9958b9
[INFO] running `Command { std: "docker" "start" "-a" "352e84bd81cfc4f23bee0c9da43eb17921bb66fbcd5c00742c57cf771c9958b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "352e84bd81cfc4f23bee0c9da43eb17921bb66fbcd5c00742c57cf771c9958b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "352e84bd81cfc4f23bee0c9da43eb17921bb66fbcd5c00742c57cf771c9958b9", kill_on_drop: false }`
[INFO] [stdout] 352e84bd81cfc4f23bee0c9da43eb17921bb66fbcd5c00742c57cf771c9958b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf4ad5308ecee1c80e2f5b700fecac412ea88ee4b7b4f1b4d34958649985c3e6
[INFO] running `Command { std: "docker" "start" "-a" "bf4ad5308ecee1c80e2f5b700fecac412ea88ee4b7b4f1b4d34958649985c3e6", kill_on_drop: false }`
[INFO] [stderr]     Checking hierarchy v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: fields `tree` and `parent` are never read
[INFO] [stdout]    --> src/lib.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub struct TreeIterator<'a, T: 'a> {
[INFO] [stdout]     |            ------------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 112 |     tree: &'a HashMap<Parent, Vec<Child>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 113 |     /// root node, we should iterate over it children
[INFO] [stdout] 114 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TreeIterator` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: fields `tree` and `parent` are never read
[INFO] [stdout]    --> src/lib.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub struct TreeIterator<'a, T: 'a> {
[INFO] [stdout]     |            ------------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 112 |     tree: &'a HashMap<Parent, Vec<Child>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 113 |     /// root node, we should iterate over it children
[INFO] [stdout] 114 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TreeIterator` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hierarchy` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hierarchy` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bf4ad5308ecee1c80e2f5b700fecac412ea88ee4b7b4f1b4d34958649985c3e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4ad5308ecee1c80e2f5b700fecac412ea88ee4b7b4f1b4d34958649985c3e6", kill_on_drop: false }`
[INFO] [stdout] bf4ad5308ecee1c80e2f5b700fecac412ea88ee4b7b4f1b4d34958649985c3e6
[INFO] checking Frozen/hierarchy against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frozen/hierarchy on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Frozen/hierarchy
[INFO] finished tweaking git repo https://github.com/Frozen/hierarchy
[INFO] tweaked toml for git repo https://github.com/Frozen/hierarchy written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Frozen/hierarchy 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb6de4e35798be28c2b7a98da7d9559a270328ff1f10bd06b81c23bef7fe77a6
[INFO] running `Command { std: "docker" "start" "-a" "fb6de4e35798be28c2b7a98da7d9559a270328ff1f10bd06b81c23bef7fe77a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb6de4e35798be28c2b7a98da7d9559a270328ff1f10bd06b81c23bef7fe77a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb6de4e35798be28c2b7a98da7d9559a270328ff1f10bd06b81c23bef7fe77a6", kill_on_drop: false }`
[INFO] [stdout] fb6de4e35798be28c2b7a98da7d9559a270328ff1f10bd06b81c23bef7fe77a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad6dfac6bf6113f15c50cc6e5e0cb0c769838a79e5b0bd7aac99d4d3297c0c3c
[INFO] running `Command { std: "docker" "start" "-a" "ad6dfac6bf6113f15c50cc6e5e0cb0c769838a79e5b0bd7aac99d4d3297c0c3c", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "ad6dfac6bf6113f15c50cc6e5e0cb0c769838a79e5b0bd7aac99d4d3297c0c3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6dfac6bf6113f15c50cc6e5e0cb0c769838a79e5b0bd7aac99d4d3297c0c3c", kill_on_drop: false }`
[INFO] [stdout] ad6dfac6bf6113f15c50cc6e5e0cb0c769838a79e5b0bd7aac99d4d3297c0c3c