[INFO] cloning repository https://github.com/enosuity/hacker-programs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/enosuity/hacker-programs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Fhacker-programs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Fhacker-programs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2161654d2450271d0b42ae9d3e03b68bf8bf9e6
[INFO] checking enosuity/hacker-programs against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Fhacker-programs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/enosuity/hacker-programs on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] finished tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] tweaked toml for git repo https://github.com/enosuity/hacker-programs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/enosuity/hacker-programs 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-3-tc1/source/Cargo.toml: unused manifest key: dependencies.week-preparation-kit.default
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking enosuity/hacker-programs against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Fhacker-programs" "/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/enosuity/hacker-programs on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] finished tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] tweaked toml for git repo https://github.com/enosuity/hacker-programs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/enosuity/hacker-programs 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" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-3-tc2/source/Cargo.toml: unused manifest key: dependencies.week-preparation-kit.default
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking enosuity/hacker-programs against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Fhacker-programs" "/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/enosuity/hacker-programs on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] finished tweaking git repo https://github.com/enosuity/hacker-programs
[INFO] tweaked toml for git repo https://github.com/enosuity/hacker-programs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/enosuity/hacker-programs 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" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-3-tc2/source/Cargo.toml: unused manifest key: dependencies.week-preparation-kit.default
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minisearch v0.1.1
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cb6db95252e9856374fce520676f9b5c94cc2235d4451c04d738cf1486c07b7
[INFO] running `Command { std: "docker" "start" "-a" "8cb6db95252e9856374fce520676f9b5c94cc2235d4451c04d738cf1486c07b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cb6db95252e9856374fce520676f9b5c94cc2235d4451c04d738cf1486c07b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb6db95252e9856374fce520676f9b5c94cc2235d4451c04d738cf1486c07b7", kill_on_drop: false }`
[INFO] [stdout] 8cb6db95252e9856374fce520676f9b5c94cc2235d4451c04d738cf1486c07b7
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1fbfc85cd7a7000aec72d8de5a5cf811b1e8cdd0229eb35bf7a4a14d62f8e1b
[INFO] running `Command { std: "docker" "start" "-a" "b1fbfc85cd7a7000aec72d8de5a5cf811b1e8cdd0229eb35bf7a4a14d62f8e1b", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: dependencies.week-preparation-kit.default
[INFO] [stderr]     Checking week-preparation-kit v0.1.0 (/opt/rustwide/workdir/week-preparation-kit)
[INFO] [stderr]     Checking minisearch v0.1.1
[INFO] [stderr]     Checking minisearch v0.1.1 (/opt/rustwide/workdir/minisearch)
[INFO] [stdout] warning: unused imports: `Read` and `self`
[INFO] [stdout]  --> minisearch/src/inventory/store.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `self`
[INFO] [stdout]  --> minisearch/src/inventory/store.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> minisearch/src/inventory/store.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |       let mut counter = categories.entry(item.clone()).or_insert(0);
[INFO] [stdout]    |           ----^^^^^^^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> minisearch/src/inventory/store.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |       let mut counter = categories.entry(item.clone()).or_insert(0);
[INFO] [stdout]    |           ----^^^^^^^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `shirts` is never read
[INFO] [stdout]   --> minisearch/src/inventory/store.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Inventory {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 16 |   shirts: Vec<ShirtColor>,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inventory` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `shirts` is never read
[INFO] [stdout]   --> minisearch/src/inventory/store.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Inventory {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 16 |   shirts: Vec<ShirtColor>,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inventory` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hacker-programs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> week-preparation-kit/tests/proportion_test.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | use week_preparation_kit::kits::proportion::{self, vec_elements_proportion};
[INFO] [stdout]   |                                              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Read`, `Write`, and `self`
[INFO] [stdout]  --> week-preparation-kit/tests/proportion_test.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Cursor, Read, self, BufRead, Write};
[INFO] [stdout]   |                       ^^^^  ^^^^  ^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "b1fbfc85cd7a7000aec72d8de5a5cf811b1e8cdd0229eb35bf7a4a14d62f8e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1fbfc85cd7a7000aec72d8de5a5cf811b1e8cdd0229eb35bf7a4a14d62f8e1b", kill_on_drop: false }`
[INFO] [stdout] b1fbfc85cd7a7000aec72d8de5a5cf811b1e8cdd0229eb35bf7a4a14d62f8e1b