[INFO] cloning repository https://github.com/ranafge/rust-unifficial-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ranafge/rust-unifficial-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust-unifficial-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust-unifficial-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7e76a15e6e8e90f3419a9647cc72786232ef123
[INFO] building ranafge/rust-unifficial-tutorial against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust-unifficial-tutorial" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ranafge/rust-unifficial-tutorial on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ranafge/rust-unifficial-tutorial
[INFO] finished tweaking git repo https://github.com/ranafge/rust-unifficial-tutorial
[INFO] tweaked toml for git repo https://github.com/ranafge/rust-unifficial-tutorial written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ranafge/rust-unifficial-tutorial 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 355a25adad3789a4b641f493d35590db351acf4d5c8dc2e01dbda1ef6360cf4f
[INFO] running `Command { std: "docker" "start" "-a" "355a25adad3789a4b641f493d35590db351acf4d5c8dc2e01dbda1ef6360cf4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "355a25adad3789a4b641f493d35590db351acf4d5c8dc2e01dbda1ef6360cf4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "355a25adad3789a4b641f493d35590db351acf4d5c8dc2e01dbda1ef6360cf4f", kill_on_drop: false }`
[INFO] [stdout] 355a25adad3789a4b641f493d35590db351acf4d5c8dc2e01dbda1ef6360cf4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf8b980b8ad7c1cc5e4e01b3c9e88eda41005bde3fa90248a5b7ef8ac27d95a3
[INFO] running `Command { std: "docker" "start" "-a" "bf8b980b8ad7c1cc5e4e01b3c9e88eda41005bde3fa90248a5b7ef8ac27d95a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `result`
[INFO] [stdout]  --> src/first.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{mem, result};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "bf8b980b8ad7c1cc5e4e01b3c9e88eda41005bde3fa90248a5b7ef8ac27d95a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf8b980b8ad7c1cc5e4e01b3c9e88eda41005bde3fa90248a5b7ef8ac27d95a3", kill_on_drop: false }`
[INFO] [stdout] bf8b980b8ad7c1cc5e4e01b3c9e88eda41005bde3fa90248a5b7ef8ac27d95a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9a6f276a20f4a49931990f7bb77a8be874da2af5cc4cd0a313fc8e25d6091bb
[INFO] running `Command { std: "docker" "start" "-a" "d9a6f276a20f4a49931990f7bb77a8be874da2af5cc4cd0a313fc8e25d6091bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `result`
[INFO] [stdout]  --> src/first.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{mem, result};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `result`
[INFO] [stdout]  --> src/first.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{mem, result};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "d9a6f276a20f4a49931990f7bb77a8be874da2af5cc4cd0a313fc8e25d6091bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9a6f276a20f4a49931990f7bb77a8be874da2af5cc4cd0a313fc8e25d6091bb", kill_on_drop: false }`
[INFO] [stdout] d9a6f276a20f4a49931990f7bb77a8be874da2af5cc4cd0a313fc8e25d6091bb