[INFO] cloning repository https://github.com/fly-duck/Rust_Tutorials
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fly-duck/Rust_Tutorials" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly-duck%2FRust_Tutorials", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly-duck%2FRust_Tutorials'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df8775048264d44495f04ff77b3b19946b09088b
[INFO] checking fly-duck/Rust_Tutorials against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly-duck%2FRust_Tutorials" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fly-duck/Rust_Tutorials on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fly-duck/Rust_Tutorials
[INFO] finished tweaking git repo https://github.com/fly-duck/Rust_Tutorials
[INFO] tweaked toml for git repo https://github.com/fly-duck/Rust_Tutorials written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/fly-duck/Rust_Tutorials already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0577f181a19404eff7b9ab6017820203a392310155ccda4180f0c5f75b18cc4f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0577f181a19404eff7b9ab6017820203a392310155ccda4180f0c5f75b18cc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0577f181a19404eff7b9ab6017820203a392310155ccda4180f0c5f75b18cc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0577f181a19404eff7b9ab6017820203a392310155ccda4180f0c5f75b18cc4f", kill_on_drop: false }`
[INFO] [stdout] 0577f181a19404eff7b9ab6017820203a392310155ccda4180f0c5f75b18cc4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bf25e8b00f9a7de32ca9f0b157c534848b9a0041a9fe1bfc35063c61637e6fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8bf25e8b00f9a7de32ca9f0b157c534848b9a0041a9fe1bfc35063c61637e6fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ferris-says v0.1.1
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "8bf25e8b00f9a7de32ca9f0b157c534848b9a0041a9fe1bfc35063c61637e6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf25e8b00f9a7de32ca9f0b157c534848b9a0041a9fe1bfc35063c61637e6fa", kill_on_drop: false }`
[INFO] [stdout] 8bf25e8b00f9a7de32ca9f0b157c534848b9a0041a9fe1bfc35063c61637e6fa