[INFO] fetching crate gitignore 1.0.7...
[INFO] checking gitignore-1.0.7 against beta for pr-78714
[INFO] extracting crate gitignore 1.0.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate gitignore 1.0.7 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gitignore 1.0.7
[INFO] finished tweaking crates.io crate gitignore 1.0.7
[INFO] tweaked toml for crates.io crate gitignore 1.0.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate gitignore 1.0.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bfa3f80998d746e229d15acf0a3ac24ebcce75fb6f2e6671f6a5122cef1c68f4
[INFO] running `Command { std: "docker" "start" "-a" "bfa3f80998d746e229d15acf0a3ac24ebcce75fb6f2e6671f6a5122cef1c68f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfa3f80998d746e229d15acf0a3ac24ebcce75fb6f2e6671f6a5122cef1c68f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfa3f80998d746e229d15acf0a3ac24ebcce75fb6f2e6671f6a5122cef1c68f4", kill_on_drop: false }`
[INFO] [stdout] bfa3f80998d746e229d15acf0a3ac24ebcce75fb6f2e6671f6a5122cef1c68f4
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4b805eb0440f9b65bc8e7bdd6e1bdf62273530787394866c3c7fcbbba7524433
[INFO] running `Command { std: "docker" "start" "-a" "4b805eb0440f9b65bc8e7bdd6e1bdf62273530787394866c3c7fcbbba7524433", kill_on_drop: false }`
[INFO] [stderr]     Checking gitignore v1.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:34:49
[INFO] [stdout]    |
[INFO] [stdout] 34 |             ErrorCause::IoError(ref err) => err.description(),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:34:49
[INFO] [stdout]    |
[INFO] [stdout] 34 |             ErrorCause::IoError(ref err) => err.description(),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `Command { std: "docker" "inspect" "4b805eb0440f9b65bc8e7bdd6e1bdf62273530787394866c3c7fcbbba7524433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b805eb0440f9b65bc8e7bdd6e1bdf62273530787394866c3c7fcbbba7524433", kill_on_drop: false }`
[INFO] [stdout] 4b805eb0440f9b65bc8e7bdd6e1bdf62273530787394866c3c7fcbbba7524433