[INFO] cloning repository https://github.com/mitchgollub/rust-dynamic-programming
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mitchgollub/rust-dynamic-programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitchgollub%2Frust-dynamic-programming", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitchgollub%2Frust-dynamic-programming'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b6c8d5716fd6f10e567174829e766a9f9a63cdd
[INFO] checking mitchgollub/rust-dynamic-programming against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitchgollub%2Frust-dynamic-programming" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mitchgollub/rust-dynamic-programming on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mitchgollub/rust-dynamic-programming
[INFO] finished tweaking git repo https://github.com/mitchgollub/rust-dynamic-programming
[INFO] tweaked toml for git repo https://github.com/mitchgollub/rust-dynamic-programming written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mitchgollub/rust-dynamic-programming 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "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
[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 mitchgollub/rust-dynamic-programming against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitchgollub%2Frust-dynamic-programming" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mitchgollub/rust-dynamic-programming on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mitchgollub/rust-dynamic-programming
[INFO] finished tweaking git repo https://github.com/mitchgollub/rust-dynamic-programming
[INFO] tweaked toml for git repo https://github.com/mitchgollub/rust-dynamic-programming written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mitchgollub/rust-dynamic-programming 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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93217ba2ec2d1dd6eb85c0e111686d0fcff40e99d7a7b62465faa9a6681cad1d
[INFO] running `Command { std: "docker" "start" "-a" "93217ba2ec2d1dd6eb85c0e111686d0fcff40e99d7a7b62465faa9a6681cad1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93217ba2ec2d1dd6eb85c0e111686d0fcff40e99d7a7b62465faa9a6681cad1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93217ba2ec2d1dd6eb85c0e111686d0fcff40e99d7a7b62465faa9a6681cad1d", kill_on_drop: false }`
[INFO] [stdout] 93217ba2ec2d1dd6eb85c0e111686d0fcff40e99d7a7b62465faa9a6681cad1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97c68b228e0087be1fbc8923e72afb6cf0e31918f033ba77a5864c4dbc23be74
[INFO] running `Command { std: "docker" "start" "-a" "97c68b228e0087be1fbc8923e72afb6cf0e31918f033ba77a5864c4dbc23be74", kill_on_drop: false }`
[INFO] [stderr]     Checking dynamic-programming-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `fib_example` is never used
[INFO] [stdout]  --> src/memoization/fib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fib_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib` is never used
[INFO] [stdout]  --> src/memoization/fib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn fib(n: usize, map: &mut HashMap<usize, usize>) -> usize {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_traveler_example` is never used
[INFO] [stdout]  --> src/memoization/grid_traveler.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn grid_traveler_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_traveler` is never used
[INFO] [stdout]   --> src/memoization/grid_traveler.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn grid_traveler(m: usize, n: usize, map: &mut HashMap<(usize, usize), usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_sum_example` is never used
[INFO] [stdout]  --> src/memoization/can_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn can_sum_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_sum` is never used
[INFO] [stdout]   --> src/memoization/can_sum.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn can_sum(target_sum: i32, numbers: &Vec<i32>, map: &mut HashMap<i32, bool>) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stdout] warning: function `fib_example` is never used
[INFO] [stdout]  --> src/memoization/fib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fib_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib` is never used
[INFO] [stdout]  --> src/memoization/fib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn fib(n: usize, map: &mut HashMap<usize, usize>) -> usize {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_traveler_example` is never used
[INFO] [stdout]  --> src/memoization/grid_traveler.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn grid_traveler_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_traveler` is never used
[INFO] [stdout]   --> src/memoization/grid_traveler.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn grid_traveler(m: usize, n: usize, map: &mut HashMap<(usize, usize), usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_sum_example` is never used
[INFO] [stdout]  --> src/memoization/can_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn can_sum_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_sum` is never used
[INFO] [stdout]   --> src/memoization/can_sum.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn can_sum(target_sum: i32, numbers: &Vec<i32>, map: &mut HashMap<i32, bool>) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97c68b228e0087be1fbc8923e72afb6cf0e31918f033ba77a5864c4dbc23be74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c68b228e0087be1fbc8923e72afb6cf0e31918f033ba77a5864c4dbc23be74", kill_on_drop: false }`
[INFO] [stdout] 97c68b228e0087be1fbc8923e72afb6cf0e31918f033ba77a5864c4dbc23be74