[INFO] cloning repository https://github.com/KidoniSoftware/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KidoniSoftware/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKidoniSoftware%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKidoniSoftware%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef2709a8f9c01f41b3f144c9c2507126968027b2
[INFO] checking KidoniSoftware/rust-examples against master#982c6f8721416431ec62bb0b9105c0578a9fc603 for pr-129329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKidoniSoftware%2Frust-examples" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KidoniSoftware/rust-examples on toolchain 982c6f8721416431ec62bb0b9105c0578a9fc603
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KidoniSoftware/rust-examples
[INFO] finished tweaking git repo https://github.com/KidoniSoftware/rust-examples
[INFO] tweaked toml for git repo https://github.com/KidoniSoftware/rust-examples written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/KidoniSoftware/rust-examples 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" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "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 KidoniSoftware/rust-examples against try#fa63ef4ad80785c0f3f362275f3772bdc67c23e0 for pr-129329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKidoniSoftware%2Frust-examples" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KidoniSoftware/rust-examples on toolchain fa63ef4ad80785c0f3f362275f3772bdc67c23e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KidoniSoftware/rust-examples
[INFO] finished tweaking git repo https://github.com/KidoniSoftware/rust-examples
[INFO] tweaked toml for git repo https://github.com/KidoniSoftware/rust-examples written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/KidoniSoftware/rust-examples 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" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20dfe2e20ee62d3e5f7a4c2714d1f179d682d7c2d89f9d9e0d1e73d08d7e7226
[INFO] running `Command { std: "docker" "start" "-a" "20dfe2e20ee62d3e5f7a4c2714d1f179d682d7c2d89f9d9e0d1e73d08d7e7226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20dfe2e20ee62d3e5f7a4c2714d1f179d682d7c2d89f9d9e0d1e73d08d7e7226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20dfe2e20ee62d3e5f7a4c2714d1f179d682d7c2d89f9d9e0d1e73d08d7e7226", kill_on_drop: false }`
[INFO] [stdout] 20dfe2e20ee62d3e5f7a4c2714d1f179d682d7c2d89f9d9e0d1e73d08d7e7226
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17ab7ae3494b5b5aa89f7f7b1f3613db490f7a49a7c60c73c204b5a5d08603e4
[INFO] running `Command { std: "docker" "start" "-a" "17ab7ae3494b5b5aa89f7f7b1f3613db490f7a49a7c60c73c204b5a5d08603e4", kill_on_drop: false }`
[INFO] [stderr]     Checking random v0.14.0
[INFO] [stderr]     Checking rust-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `common_elements` is never used
[INFO] [stdout]   --> src/lib.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn common_elements(v1: Vec<i32>, v2: Vec<i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PAD` is never used
[INFO] [stdout]   --> src/crypto.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 |     const PAD: char = '=';
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bytes_to_hex_string` is never used
[INFO] [stdout]    --> src/crypto.rs:143:4
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn bytes_to_hex_string(bytes: Vec<u8>) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PAD` is never used
[INFO] [stdout]   --> src/crypto.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 |     const PAD: char = '=';
[INFO] [stdout]    |           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "17ab7ae3494b5b5aa89f7f7b1f3613db490f7a49a7c60c73c204b5a5d08603e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17ab7ae3494b5b5aa89f7f7b1f3613db490f7a49a7c60c73c204b5a5d08603e4", kill_on_drop: false }`
[INFO] [stdout] 17ab7ae3494b5b5aa89f7f7b1f3613db490f7a49a7c60c73c204b5a5d08603e4