[INFO] cloning repository https://github.com/mbiti2/group-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mbiti2/group-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmbiti2%2Fgroup-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmbiti2%2Fgroup-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3987301771add9640db64de7030e26284de662d1
[INFO] checking mbiti2/group-generator against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmbiti2%2Fgroup-generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mbiti2/group-generator
[INFO] finished tweaking git repo https://github.com/mbiti2/group-generator
[INFO] tweaked toml for git repo https://github.com/mbiti2/group-generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mbiti2/group-generator on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mbiti2/group-generator 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking mbiti2/group-generator against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmbiti2%2Fgroup-generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mbiti2/group-generator
[INFO] finished tweaking git repo https://github.com/mbiti2/group-generator
[INFO] tweaked toml for git repo https://github.com/mbiti2/group-generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mbiti2/group-generator on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mbiti2/group-generator 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cli-table v0.4.9
[INFO] [stderr]   Downloaded rand_core v0.9.1
[INFO] [stderr]   Downloaded rand v0.9.0
[INFO] [stderr]   Downloaded cli-table-derive v0.4.6
[INFO] [stderr]   Downloaded csv-core v0.1.12
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.18
[INFO] [stderr]   Downloaded zerocopy v0.8.18
[INFO] [stderr]   Downloaded csv v1.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e71139f22fd3048ecd80d8d116188193dcbe66ca96023e9303e327de24af15f
[INFO] running `Command { std: "docker" "start" "-a" "6e71139f22fd3048ecd80d8d116188193dcbe66ca96023e9303e327de24af15f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e71139f22fd3048ecd80d8d116188193dcbe66ca96023e9303e327de24af15f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e71139f22fd3048ecd80d8d116188193dcbe66ca96023e9303e327de24af15f", kill_on_drop: false }`
[INFO] [stdout] 6e71139f22fd3048ecd80d8d116188193dcbe66ca96023e9303e327de24af15f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d888a87657031173cf9f3d79a93300495c0c80c39607ebaf714471973202df2a
[INFO] running `Command { std: "docker" "start" "-a" "d888a87657031173cf9f3d79a93300495c0c80c39607ebaf714471973202df2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling zerocopy v0.8.18
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking rand_core v0.9.1
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]    Compiling cli-table-derive v0.4.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking cli-table v0.4.9
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking group-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `self` and `self`
[INFO] [stdout]   --> src/application.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |         group::{self, Group},
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 11 |         student::{self, Student},
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/enums/difficulty.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{write, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self` and `self`
[INFO] [stdout]   --> src/application.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |         group::{self, Group},
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 11 |         student::{self, Student},
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/enums/difficulty.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{write, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GenDataDisplay` is never used
[INFO] [stdout]  --> src/traits/gen_data_display.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait GenDataDisplay {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GenDataDisplay` is never used
[INFO] [stdout]  --> src/traits/gen_data_display.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait GenDataDisplay {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.56s
[INFO] running `Command { std: "docker" "inspect" "d888a87657031173cf9f3d79a93300495c0c80c39607ebaf714471973202df2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d888a87657031173cf9f3d79a93300495c0c80c39607ebaf714471973202df2a", kill_on_drop: false }`
[INFO] [stdout] d888a87657031173cf9f3d79a93300495c0c80c39607ebaf714471973202df2a