[INFO] cloning repository https://github.com/Ruddickmg/heapz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ruddickmg/heapz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuddickmg%2Fheapz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuddickmg%2Fheapz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5746e18f073f6bb49cd4303ef7fe365f95fc86d5
[INFO] checking Ruddickmg/heapz against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuddickmg%2Fheapz" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ruddickmg/heapz
[INFO] finished tweaking git repo https://github.com/Ruddickmg/heapz
[INFO] tweaked toml for git repo https://github.com/Ruddickmg/heapz written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ruddickmg/heapz on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ruddickmg/heapz 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13b89fc2de01fdc196c45224109924eab553978d17dedf00fa73f5cd277ba0ca
[INFO] running `Command { std: "docker" "start" "-a" "13b89fc2de01fdc196c45224109924eab553978d17dedf00fa73f5cd277ba0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13b89fc2de01fdc196c45224109924eab553978d17dedf00fa73f5cd277ba0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13b89fc2de01fdc196c45224109924eab553978d17dedf00fa73f5cd277ba0ca", kill_on_drop: false }`
[INFO] [stdout] 13b89fc2de01fdc196c45224109924eab553978d17dedf00fa73f5cd277ba0ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87e39c0ae4c0c015cbe95ba5bebd620ee032b558b77e81f58d88ee0357cd46f6
[INFO] running `Command { std: "docker" "start" "-a" "87e39c0ae4c0c015cbe95ba5bebd620ee032b558b77e81f58d88ee0357cd46f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking textwrap v0.15.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking heapz v1.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rank_pairing_heap.rs:374:13
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let mut parent: Position;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rank_pairing_heap.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let mut child: Position;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rank_pairing_heap.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |             let mut parent_node: *mut Node<K, V>;
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rank_pairing_heap.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |             let mut child_node: *mut Node<K, V>;
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heap_rank` is never read
[INFO] [stdout]   --> src/rank_pairing_heap.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct RankPairingHeap<K: Hash + Eq + Clone, V: PartialOrd> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 70 |     root: Position,
[INFO] [stdout] 71 |     heap_rank: HeapRank,
[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 items `rank1`, `rank2`, `rank`, and `rank_nodes` are never used
[INFO] [stdout]    --> src/rank_pairing_heap.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | / impl<K, V> RankPairingHeap<K, V>
[INFO] [stdout] 182 | | where
[INFO] [stdout] 183 | |     K: Hash + Eq + Clone,
[INFO] [stdout] 184 | |     V: PartialOrd,
[INFO] [stdout]     | |__________________- associated items in this implementation
[INFO] [stdout] 185 |   {
[INFO] [stdout] 186 |       fn rank1(left: i32, next: i32) -> i32 {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |       fn rank2(left: i32, next: i32) -> i32 {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 |       fn rank(&self, left: i32, next: i32) -> usize {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 210 |       fn rank_nodes(&self, left: Position, next: Position) -> usize {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_index`, `get_left_index`, `get_next_index`, `get_parent_index`, and `get_siblings` are never used
[INFO] [stdout]    --> src/rank_pairing_heap.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 266 | impl<K: Hash + Eq + Clone, V: PartialOrd> RankPairingHeap<K, V> {
[INFO] [stdout]     | --------------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 296 |     fn get_index<F: Fn(&Node<K, V>) -> Position>(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |     fn get_left_index(&self, index: Position) -> Position {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 308 |     fn get_next_index(&self, index: Position) -> Position {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 312 |     fn get_parent_index(&self, index: Position) -> Position {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 321 |     fn get_siblings(&self, position: Position) -> Option<(Position, Position)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v3.2.22
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "87e39c0ae4c0c015cbe95ba5bebd620ee032b558b77e81f58d88ee0357cd46f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e39c0ae4c0c015cbe95ba5bebd620ee032b558b77e81f58d88ee0357cd46f6", kill_on_drop: false }`
[INFO] [stdout] 87e39c0ae4c0c015cbe95ba5bebd620ee032b558b77e81f58d88ee0357cd46f6
