[INFO] fetching crate priority-queue-rs 0.1.26...
[INFO] building priority-queue-rs-0.1.26 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate priority-queue-rs 0.1.26 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate priority-queue-rs 0.1.26
[INFO] finished tweaking crates.io crate priority-queue-rs 0.1.26
[INFO] tweaked toml for crates.io crate priority-queue-rs 0.1.26 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate priority-queue-rs 0.1.26 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3808a822732d6f47b474615d08d02d9e5732a2804dfb73fc000630439027315
[INFO] running `Command { std: "docker" "start" "-a" "d3808a822732d6f47b474615d08d02d9e5732a2804dfb73fc000630439027315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3808a822732d6f47b474615d08d02d9e5732a2804dfb73fc000630439027315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3808a822732d6f47b474615d08d02d9e5732a2804dfb73fc000630439027315", kill_on_drop: false }`
[INFO] [stdout] d3808a822732d6f47b474615d08d02d9e5732a2804dfb73fc000630439027315
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c0ab0c62f441ae3e3c2db8d0af899dd322b584fbfe59dd586974ab16c52ff4f
[INFO] running `Command { std: "docker" "start" "-a" "8c0ab0c62f441ae3e3c2db8d0af899dd322b584fbfe59dd586974ab16c52ff4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling priority-queue-rs v0.1.26 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `PriorityQueueNode` is never constructed
[INFO] [stdout]  --> src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct PriorityQueueNode<T> where T: Sized {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> PriorityQueueNode<T> {
[INFO] [stdout]   | ---------------------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new(priority: u32, value: T) -> PriorityQueueNode<T> {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PriorityQueue` is never constructed
[INFO] [stdout]   --> src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct PriorityQueue<T> where T: Sized {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `pop`, `peek`, and `push` are never used
[INFO] [stdout]   --> src/lib.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T> PriorityQueue<T> {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 27 |     pub fn new() -> PriorityQueue<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn peek(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub fn push(&mut self, priority: u32, value: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "8c0ab0c62f441ae3e3c2db8d0af899dd322b584fbfe59dd586974ab16c52ff4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c0ab0c62f441ae3e3c2db8d0af899dd322b584fbfe59dd586974ab16c52ff4f", kill_on_drop: false }`
[INFO] [stdout] 8c0ab0c62f441ae3e3c2db8d0af899dd322b584fbfe59dd586974ab16c52ff4f
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41ac648f0628ee8dcee169fa1dc16ca89d387c597ae881d1a8d5bf8d1d367c78
[INFO] running `Command { std: "docker" "start" "-a" "41ac648f0628ee8dcee169fa1dc16ca89d387c597ae881d1a8d5bf8d1d367c78", kill_on_drop: false }`
[INFO] [stderr]    Compiling priority-queue-rs v0.1.26 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `PriorityQueueNode` is never constructed
[INFO] [stdout]  --> src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct PriorityQueueNode<T> where T: Sized {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> PriorityQueueNode<T> {
[INFO] [stdout]   | ---------------------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new(priority: u32, value: T) -> PriorityQueueNode<T> {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PriorityQueue` is never constructed
[INFO] [stdout]   --> src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct PriorityQueue<T> where T: Sized {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `pop`, `peek`, and `push` are never used
[INFO] [stdout]   --> src/lib.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T> PriorityQueue<T> {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 27 |     pub fn new() -> PriorityQueue<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn peek(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub fn push(&mut self, priority: u32, value: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `priority`
[INFO] [stdout]    --> src/lib.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         for priority in 0..10 {
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_priority`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "41ac648f0628ee8dcee169fa1dc16ca89d387c597ae881d1a8d5bf8d1d367c78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ac648f0628ee8dcee169fa1dc16ca89d387c597ae881d1a8d5bf8d1d367c78", kill_on_drop: false }`
[INFO] [stdout] 41ac648f0628ee8dcee169fa1dc16ca89d387c597ae881d1a8d5bf8d1d367c78