[INFO] cloning repository https://github.com/Vaider7/rust_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vaider7/rust_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVaider7%2Frust_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVaider7%2Frust_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd602bd74b75e92a17e3d71a88e96f99353ac078
[INFO] checking Vaider7/rust_algorithms against master#c3def263a44e07e09ae6d57abfc8650227fb4972 for pr-118833
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVaider7%2Frust_algorithms" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vaider7/rust_algorithms on toolchain c3def263a44e07e09ae6d57abfc8650227fb4972
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Vaider7/rust_algorithms written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Vaider7/rust_algorithms 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" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "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 Vaider7/rust_algorithms against try#29596578cb5035fa2b7ac7fbdfea23fab38836e7 for pr-118833
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVaider7%2Frust_algorithms" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vaider7/rust_algorithms on toolchain 29596578cb5035fa2b7ac7fbdfea23fab38836e7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Vaider7/rust_algorithms written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Vaider7/rust_algorithms 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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "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 Vaider7/rust_algorithms against try#29596578cb5035fa2b7ac7fbdfea23fab38836e7 for pr-118833
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVaider7%2Frust_algorithms" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vaider7/rust_algorithms on toolchain 29596578cb5035fa2b7ac7fbdfea23fab38836e7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Vaider7/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Vaider7/rust_algorithms written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Vaider7/rust_algorithms 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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29d33d0347195adea635a856fd8e4bc783a8d808913ddc3216f27832764ef01a
[INFO] running `Command { std: "docker" "start" "-a" "29d33d0347195adea635a856fd8e4bc783a8d808913ddc3216f27832764ef01a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29d33d0347195adea635a856fd8e4bc783a8d808913ddc3216f27832764ef01a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29d33d0347195adea635a856fd8e4bc783a8d808913ddc3216f27832764ef01a", kill_on_drop: false }`
[INFO] [stdout] 29d33d0347195adea635a856fd8e4bc783a8d808913ddc3216f27832764ef01a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 767afd4d09eb844cd5a062bd501221b1a8d4ea4d9b2f42068ba65d348534f64d
[INFO] running `Command { std: "docker" "start" "-a" "767afd4d09eb844cd5a062bd501221b1a8d4ea4d9b2f42068ba65d348534f64d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `linked_list`
[INFO] [stdout]  --> src/examples/linked_lists/unidirectional_linked_list.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let linked_list = LinkedList::from([1, 2, 3]);
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_linked_list`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gcd` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/gcd.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn gcd(mut a: u32, mut b: u32) -> u32 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_of_integers` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/find_factors.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn list_of_integers(mut number: u32) -> Vec<u32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_primes` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/find_primes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn find_primes(max_number: u32) -> Vec<u32> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/is_prime.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn is_prime(p: u32, max_tests: u32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_rectangle_rule` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/use_rectangle_rule.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn use_rectangle_rule<T>(function: T, x_min: f32, x_max: f32, num_intervals: u32) -> f32
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_trapezoid_rule` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/use_trapezoid_rule.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn use_trapezoid_rule<T>(function: T, x_min: f32, x_max: f32, num_intervals: u32) -> f32
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `integrate_adaptive_midpoint` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/integrate_adaptive_midpoint.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn integrate_adaptive_midpoint<T>(
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_area` is never used
[INFO] [stdout]   --> src/examples/numerical_algorithms/integrate_adaptive_midpoint.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn slice_area<T>(function: T, x1: f32, x2: f32, max_slice_error: f32) -> f32
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_zero` is never used
[INFO] [stdout]  --> src/examples/numerical_algorithms/find_zero.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn find_zero<T, J>(function: T, df_dx: J, initial_guess: f32, max_error: f32) -> f32
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]  --> src/examples/linked_lists/unidirectional_linked_list.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn foo() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `linked_list`
[INFO] [stdout]  --> src/examples/linked_lists/unidirectional_linked_list.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let linked_list = LinkedList::from([1, 2, 3]);
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_linked_list`
[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] error[E0601]: `main` function not found in crate `algorithms`
[INFO] [stdout]  --> src/main.rs:1:2
[INFO] [stdout]   |
[INFO] [stdout] 1 |
[INFO] [stdout]   |  ^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algorithms` (bin "algorithms") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "767afd4d09eb844cd5a062bd501221b1a8d4ea4d9b2f42068ba65d348534f64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767afd4d09eb844cd5a062bd501221b1a8d4ea4d9b2f42068ba65d348534f64d", kill_on_drop: false }`
[INFO] [stdout] 767afd4d09eb844cd5a062bd501221b1a8d4ea4d9b2f42068ba65d348534f64d