[INFO] cloning repository https://github.com/mormod/scheduling-showcase
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mormod/scheduling-showcase" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmormod%2Fscheduling-showcase", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmormod%2Fscheduling-showcase'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e3b81e18caf86f01ca9b61a3c2b0df5d336aee6
[INFO] checking mormod/scheduling-showcase against master#00bfd6b2734d9c28a147bf237490995731781fdd for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmormod%2Fscheduling-showcase" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mormod/scheduling-showcase on toolchain 00bfd6b2734d9c28a147bf237490995731781fdd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] finished tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] tweaked toml for git repo https://github.com/mormod/scheduling-showcase written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mormod/scheduling-showcase 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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "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
[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 mormod/scheduling-showcase against try#aa7c6ba69acce8b10a275eabfe6157ea72c8b599 for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmormod%2Fscheduling-showcase" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mormod/scheduling-showcase on toolchain aa7c6ba69acce8b10a275eabfe6157ea72c8b599
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] finished tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] tweaked toml for git repo https://github.com/mormod/scheduling-showcase written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mormod/scheduling-showcase 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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking mormod/scheduling-showcase against try#aa7c6ba69acce8b10a275eabfe6157ea72c8b599 for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmormod%2Fscheduling-showcase" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mormod/scheduling-showcase on toolchain aa7c6ba69acce8b10a275eabfe6157ea72c8b599
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] finished tweaking git repo https://github.com/mormod/scheduling-showcase
[INFO] tweaked toml for git repo https://github.com/mormod/scheduling-showcase written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mormod/scheduling-showcase 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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd482812fedd261856750fb137221b7e8226f66c4af5a04c3eac2c4150146bba
[INFO] running `Command { std: "docker" "start" "-a" "fd482812fedd261856750fb137221b7e8226f66c4af5a04c3eac2c4150146bba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd482812fedd261856750fb137221b7e8226f66c4af5a04c3eac2c4150146bba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd482812fedd261856750fb137221b7e8226f66c4af5a04c3eac2c4150146bba", kill_on_drop: false }`
[INFO] [stdout] fd482812fedd261856750fb137221b7e8226f66c4af5a04c3eac2c4150146bba
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3691f7ad96f7bd43b24a7bccb4cbb6fded297c9a996db31cc897fc6e18b8dc32
[INFO] running `Command { std: "docker" "start" "-a" "3691f7ad96f7bd43b24a7bccb4cbb6fded297c9a996db31cc897fc6e18b8dc32", kill_on_drop: false }`
[INFO] [stderr]     Checking scheduling-showcase v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `os::unix::process`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt, os::unix::process};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `os::unix::process`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt, os::unix::process};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processes`
[INFO] [stdout]   --> src/main.rs:93:20
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn round_robin(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processes`
[INFO] [stdout]   --> src/main.rs:98:35
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn multi_level_feedback_queue(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processes`
[INFO] [stdout]   --> src/main.rs:93:20
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn round_robin(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processes`
[INFO] [stdout]   --> src/main.rs:98:35
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn multi_level_feedback_queue(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processor`
[INFO] [stdout]    --> src/main.rs:345:16
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn round_robin(processor: &mut Processor) {
[INFO] [stdout]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `processor`
[INFO] [stdout]    --> src/main.rs:345:16
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn round_robin(processor: &mut Processor) {
[INFO] [stdout]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_processor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `previous` and `time_quantum` are never read
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Processor {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 48 |     previous: Option<usize>, // The id of the process executed in the last step
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     time_quantum: u64,       // Minimal amount of time a process is allowed to run uninterrupted
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `previous` and `time_quantum` are never read
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Processor {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 48 |     previous: Option<usize>, // The id of the process executed in the last step
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     time_quantum: u64,       // Minimal amount of time a process is allowed to run uninterrupted
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `round_robin` and `multi_level_feedback_queue` are never used
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Processor {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 93 |     fn round_robin(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn multi_level_feedback_queue(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `round_robin` is never used
[INFO] [stdout]    --> src/main.rs:345:4
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn round_robin(processor: &mut Processor) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `round_robin` and `multi_level_feedback_queue` are never used
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Processor {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 93 |     fn round_robin(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn multi_level_feedback_queue(processes: Vec<Process>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `round_robin` is never used
[INFO] [stdout]    --> src/main.rs:345:4
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn round_robin(processor: &mut Processor) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "3691f7ad96f7bd43b24a7bccb4cbb6fded297c9a996db31cc897fc6e18b8dc32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3691f7ad96f7bd43b24a7bccb4cbb6fded297c9a996db31cc897fc6e18b8dc32", kill_on_drop: false }`
[INFO] [stdout] 3691f7ad96f7bd43b24a7bccb4cbb6fded297c9a996db31cc897fc6e18b8dc32