[INFO] cloning repository https://github.com/vidur2/perfect_dominating_posets
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vidur2/perfect_dominating_posets" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvidur2%2Fperfect_dominating_posets", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvidur2%2Fperfect_dominating_posets'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42b16819cdc9cb6515db2bdff0827595c1e4a4f8
[INFO] checking vidur2/perfect_dominating_posets against try#b2fb67b8b6007ced9ad3f3b752a6fec899e7859c for pr-138915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvidur2%2Fperfect_dominating_posets" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vidur2/perfect_dominating_posets on toolchain b2fb67b8b6007ced9ad3f3b752a6fec899e7859c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vidur2/perfect_dominating_posets
[INFO] finished tweaking git repo https://github.com/vidur2/perfect_dominating_posets
[INFO] tweaked toml for git repo https://github.com/vidur2/perfect_dominating_posets written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vidur2/perfect_dominating_posets 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" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83069c75c6683a2f437a4eb2647256db110b2c723227df844f25f740302135dd
[INFO] running `Command { std: "docker" "start" "-a" "83069c75c6683a2f437a4eb2647256db110b2c723227df844f25f740302135dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83069c75c6683a2f437a4eb2647256db110b2c723227df844f25f740302135dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83069c75c6683a2f437a4eb2647256db110b2c723227df844f25f740302135dd", kill_on_drop: false }`
[INFO] [stdout] 83069c75c6683a2f437a4eb2647256db110b2c723227df844f25f740302135dd
[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" "-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+b2fb67b8b6007ced9ad3f3b752a6fec899e7859c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b79b8acd0b0d9b4f227f5487e46b711a0bdcf90e1f94f864395abb1bac0c0c6
[INFO] running `Command { std: "docker" "start" "-a" "0b79b8acd0b0d9b4f227f5487e46b711a0bdcf90e1f94f864395abb1bac0c0c6", kill_on_drop: false }`
[INFO] [stderr]     Checking perfect_dominating_posets v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `cell::RefCell` and `rc::Rc`
[INFO] [stdout]  --> src/interval.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, cmp::Ordering, collections::HashMap, collections::HashSet, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^                                                             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cell::RefCell` and `rc::Rc`
[INFO] [stdout]  --> src/interval.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, cmp::Ordering, collections::HashMap, collections::HashSet, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^                                                             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `verify_chain` is never used
[INFO] [stdout]    --> src/interval.rs:219:8
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl Interval {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn verify_chain(values: &Vec<HashSet<u8>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_edge` is never used
[INFO] [stdout]    --> src/preprocessing.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn parse_edge(edge: &str) -> (u8, u8) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `verify_chain` is never used
[INFO] [stdout]    --> src/interval.rs:219:8
[INFO] [stdout]     |
[INFO] [stdout] 53  | impl Interval {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn verify_chain(values: &Vec<HashSet<u8>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_edge` is never used
[INFO] [stdout]    --> src/preprocessing.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn parse_edge(edge: &str) -> (u8, u8) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "0b79b8acd0b0d9b4f227f5487e46b711a0bdcf90e1f94f864395abb1bac0c0c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b79b8acd0b0d9b4f227f5487e46b711a0bdcf90e1f94f864395abb1bac0c0c6", kill_on_drop: false }`
[INFO] [stdout] 0b79b8acd0b0d9b4f227f5487e46b711a0bdcf90e1f94f864395abb1bac0c0c6