[INFO] cloning repository https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realhardworkingdeveloper/hackerrank-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2794449d3ef567e009880d7913de465c82c27592
[INFO] testing realhardworkingdeveloper/hackerrank-rust against master#595316b4006932405a63862d8fe65f71a6356293 for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realhardworkingdeveloper/hackerrank-rust on toolchain 595316b4006932405a63862d8fe65f71a6356293
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+595316b4006932405a63862d8fe65f71a6356293" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/realhardworkingdeveloper/hackerrank-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/realhardworkingdeveloper/hackerrank-rust 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" "+595316b4006932405a63862d8fe65f71a6356293" "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] testing realhardworkingdeveloper/hackerrank-rust against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realhardworkingdeveloper/hackerrank-rust on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/realhardworkingdeveloper/hackerrank-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/realhardworkingdeveloper/hackerrank-rust 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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] testing realhardworkingdeveloper/hackerrank-rust against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realhardworkingdeveloper/hackerrank-rust on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/realhardworkingdeveloper/hackerrank-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/realhardworkingdeveloper/hackerrank-rust 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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] testing realhardworkingdeveloper/hackerrank-rust against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realhardworkingdeveloper/hackerrank-rust on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/realhardworkingdeveloper/hackerrank-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/realhardworkingdeveloper/hackerrank-rust 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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] testing realhardworkingdeveloper/hackerrank-rust against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealhardworkingdeveloper%2Fhackerrank-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realhardworkingdeveloper/hackerrank-rust on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/realhardworkingdeveloper/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/realhardworkingdeveloper/hackerrank-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/realhardworkingdeveloper/hackerrank-rust 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90cbc3f180d41640249a4e19d98b1e0647f0873570c57b9612427b43eba11ed3
[INFO] running `Command { std: "docker" "start" "-a" "90cbc3f180d41640249a4e19d98b1e0647f0873570c57b9612427b43eba11ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90cbc3f180d41640249a4e19d98b1e0647f0873570c57b9612427b43eba11ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90cbc3f180d41640249a4e19d98b1e0647f0873570c57b9612427b43eba11ed3", kill_on_drop: false }`
[INFO] [stdout] 90cbc3f180d41640249a4e19d98b1e0647f0873570c57b9612427b43eba11ed3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7f9212cc5dc2e67274bf0589993bec63ce805f19f93a8300a2844fcdfedcd4d
[INFO] running `Command { std: "docker" "start" "-a" "e7f9212cc5dc2e67274bf0589993bec63ce805f19f93a8300a2844fcdfedcd4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling flipping-bits v0.1.0 (/opt/rustwide/workdir/flipping-bits)
[INFO] [stderr]    Compiling mars-exploration v0.1.0 (/opt/rustwide/workdir/mars-exploration)
[INFO] [stderr]    Compiling pangrams v0.1.0 (/opt/rustwide/workdir/pangrams)
[INFO] [stderr]    Compiling read-inputs v0.1.0 (/opt/rustwide/workdir/read-inputs)
[INFO] [stderr]    Compiling diagonal-difference v0.1.0 (/opt/rustwide/workdir/diagonal-difference)
[INFO] [stderr]    Compiling breaking-records v0.1.0 (/opt/rustwide/workdir/breaking-records)
[INFO] [stderr]    Compiling sparse-arrays v0.1.0 (/opt/rustwide/workdir/sparse-arrays)
[INFO] [stderr]    Compiling divisible-sum-pairs v0.1.0 (/opt/rustwide/workdir/divisible-sum-pairs)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> read-inputs/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]  --> read-inputs/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let values: Vec<i32> = stdin_iterator.next().unwrap().unwrap()
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling camel-case v0.1.0 (/opt/rustwide/workdir/camel-case)
[INFO] [stderr]    Compiling lonely-integer v0.1.0 (/opt/rustwide/workdir/lonely-integer)
[INFO] [stderr]    Compiling mini-max-sum v0.1.0 (/opt/rustwide/workdir/mini-max-sum)
[INFO] [stderr]    Compiling counting-valleys v0.1.0 (/opt/rustwide/workdir/counting-valleys)
[INFO] [stderr]    Compiling plus-minus v0.1.0 (/opt/rustwide/workdir/plus-minus)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling time-conversion v0.1.0 (/opt/rustwide/workdir/time-conversion)
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]  --> counting-valleys/src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn counting_valleys(steps: i32, path: &str) -> i32 {
[INFO] [stdout]   |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling counting-sort v0.1.0 (/opt/rustwide/workdir/counting-sort)
[INFO] [stderr]    Compiling grading-students v0.1.0 (/opt/rustwide/workdir/grading-students)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> grading-students/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "e7f9212cc5dc2e67274bf0589993bec63ce805f19f93a8300a2844fcdfedcd4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7f9212cc5dc2e67274bf0589993bec63ce805f19f93a8300a2844fcdfedcd4d", kill_on_drop: false }`
[INFO] [stdout] e7f9212cc5dc2e67274bf0589993bec63ce805f19f93a8300a2844fcdfedcd4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 429d58572f947c37b69ea50009887ea73120e84cf2ff4cde35f87b0a77bf9192
[INFO] running `Command { std: "docker" "start" "-a" "429d58572f947c37b69ea50009887ea73120e84cf2ff4cde35f87b0a77bf9192", kill_on_drop: false }`
[INFO] [stderr]    Compiling divisible-sum-pairs v0.1.0 (/opt/rustwide/workdir/divisible-sum-pairs)
[INFO] [stderr]    Compiling counting-valleys v0.1.0 (/opt/rustwide/workdir/counting-valleys)
[INFO] [stderr]    Compiling pangrams v0.1.0 (/opt/rustwide/workdir/pangrams)
[INFO] [stderr]    Compiling camel-case v0.1.0 (/opt/rustwide/workdir/camel-case)
[INFO] [stderr]    Compiling grading-students v0.1.0 (/opt/rustwide/workdir/grading-students)
[INFO] [stderr]    Compiling plus-minus v0.1.0 (/opt/rustwide/workdir/plus-minus)
[INFO] [stderr]    Compiling mini-max-sum v0.1.0 (/opt/rustwide/workdir/mini-max-sum)
[INFO] [stderr]    Compiling breaking-records v0.1.0 (/opt/rustwide/workdir/breaking-records)
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]  --> counting-valleys/src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn counting_valleys(steps: i32, path: &str) -> i32 {
[INFO] [stdout]   |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> grading-students/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lonely-integer v0.1.0 (/opt/rustwide/workdir/lonely-integer)
[INFO] [stderr]    Compiling sparse-arrays v0.1.0 (/opt/rustwide/workdir/sparse-arrays)
[INFO] [stderr]    Compiling diagonal-difference v0.1.0 (/opt/rustwide/workdir/diagonal-difference)
[INFO] [stderr]    Compiling read-inputs v0.1.0 (/opt/rustwide/workdir/read-inputs)
[INFO] [stderr]    Compiling counting-sort v0.1.0 (/opt/rustwide/workdir/counting-sort)
[INFO] [stderr]    Compiling mars-exploration v0.1.0 (/opt/rustwide/workdir/mars-exploration)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling time-conversion v0.1.0 (/opt/rustwide/workdir/time-conversion)
[INFO] [stderr]    Compiling flipping-bits v0.1.0 (/opt/rustwide/workdir/flipping-bits)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> read-inputs/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]  --> read-inputs/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let values: Vec<i32> = stdin_iterator.next().unwrap().unwrap()
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "429d58572f947c37b69ea50009887ea73120e84cf2ff4cde35f87b0a77bf9192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "429d58572f947c37b69ea50009887ea73120e84cf2ff4cde35f87b0a77bf9192", kill_on_drop: false }`
[INFO] [stdout] 429d58572f947c37b69ea50009887ea73120e84cf2ff4cde35f87b0a77bf9192
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f358f963f0d10d4236af00cf36a8888e27f2dfaf2e789405cbcdd5a39ec2a4e
[INFO] running `Command { std: "docker" "start" "-a" "5f358f963f0d10d4236af00cf36a8888e27f2dfaf2e789405cbcdd5a39ec2a4e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> grading-students/src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]  --> read-inputs/src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let n = stdin_iterator.next().unwrap().unwrap().trim().parse::<i32>().unwrap();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `values`
[INFO] [stderr]  --> read-inputs/src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let values: Vec<i32> = stdin_iterator.next().unwrap().unwrap()
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stderr] 
[INFO] [stderr] warning: `grading-students` (bin "grading-students" test) generated 1 warning
[INFO] [stderr] warning: `read-inputs` (bin "read-inputs" test) generated 2 warnings
[INFO] [stderr] warning: unused variable: `steps`
[INFO] [stderr]  --> counting-valleys/src/main.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn counting_valleys(steps: i32, path: &str) -> i32 {
[INFO] [stderr]   |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `counting-valleys` (bin "counting-valleys" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/breaking_records-3ee5ddfe4349109d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/camel_case-24408078c30c3d41)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/counting_sort-5207ab341ed340aa)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/counting_valleys-b151c253b49d671b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/diagonal_difference-14dd83750c432cdd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/divisible_sum_pairs-ad7ddfc547e7a847)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/flipping_bits-6ebbd526488510f2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grading_students-b6898239ecea8c5e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lonely_integer-9240cc0054037c7d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mars_exploration-dd16b9cfe7240597)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mini_max_sum-41675e41ebc75a75)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/pangrams-2d52fbc53e3df3cb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/plus_minus-c411950912e7911e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/read_inputs-f477ef47d8e4dfae)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sparse_arrays-d2792af98f30eee2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/time_conversion-883de45d905311a5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f358f963f0d10d4236af00cf36a8888e27f2dfaf2e789405cbcdd5a39ec2a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f358f963f0d10d4236af00cf36a8888e27f2dfaf2e789405cbcdd5a39ec2a4e", kill_on_drop: false }`
[INFO] [stdout] 5f358f963f0d10d4236af00cf36a8888e27f2dfaf2e789405cbcdd5a39ec2a4e