[INFO] cloning repository https://github.com/m-aamir95/rust-practice-SinglyLinkedList
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m-aamir95/rust-practice-SinglyLinkedList" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-aamir95%2Frust-practice-SinglyLinkedList", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-aamir95%2Frust-practice-SinglyLinkedList'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26b87e7dd92ddb85a61b4b8e1c181b1118b39002
[INFO] checking m-aamir95/rust-practice-SinglyLinkedList against master#a932eb36f8adf6c8cdfc450f063943da3112d621 for pr-140209-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-aamir95%2Frust-practice-SinglyLinkedList" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/m-aamir95/rust-practice-SinglyLinkedList on toolchain a932eb36f8adf6c8cdfc450f063943da3112d621
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/m-aamir95/rust-practice-SinglyLinkedList
[INFO] finished tweaking git repo https://github.com/m-aamir95/rust-practice-SinglyLinkedList
[INFO] tweaked toml for git repo https://github.com/m-aamir95/rust-practice-SinglyLinkedList written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/m-aamir95/rust-practice-SinglyLinkedList 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" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be404c441736511319305c556239d957314637595821d43334b70949adaefb53
[INFO] running `Command { std: "docker" "start" "-a" "be404c441736511319305c556239d957314637595821d43334b70949adaefb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be404c441736511319305c556239d957314637595821d43334b70949adaefb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be404c441736511319305c556239d957314637595821d43334b70949adaefb53", kill_on_drop: false }`
[INFO] [stdout] be404c441736511319305c556239d957314637595821d43334b70949adaefb53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1073e658454da3c41ecaf1ddba6fc6204825494a623c271de64f918669472d0a
[INFO] running `Command { std: "docker" "start" "-a" "1073e658454da3c41ecaf1ddba6fc6204825494a623c271de64f918669472d0a", kill_on_drop: false }`
[INFO] [stderr]     Checking practice-box-smart-pointer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "1073e658454da3c41ecaf1ddba6fc6204825494a623c271de64f918669472d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1073e658454da3c41ecaf1ddba6fc6204825494a623c271de64f918669472d0a", kill_on_drop: false }`
[INFO] [stdout] 1073e658454da3c41ecaf1ddba6fc6204825494a623c271de64f918669472d0a