[INFO] fetching crate displaydoc 0.1.7...
[INFO] checking displaydoc-0.1.7 against beta for pr-78714
[INFO] extracting crate displaydoc 0.1.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate displaydoc 0.1.7 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 displaydoc 0.1.7
[INFO] finished tweaking crates.io crate displaydoc 0.1.7
[INFO] tweaked toml for crates.io crate displaydoc 0.1.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate displaydoc 0.1.7 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 7b7fcc6e8b3459eef625f2158a9460858f931070c78fd25cf89c3b58ba5572d1
[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" "7b7fcc6e8b3459eef625f2158a9460858f931070c78fd25cf89c3b58ba5572d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b7fcc6e8b3459eef625f2158a9460858f931070c78fd25cf89c3b58ba5572d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7fcc6e8b3459eef625f2158a9460858f931070c78fd25cf89c3b58ba5572d1", kill_on_drop: false }`
[INFO] [stdout] 7b7fcc6e8b3459eef625f2158a9460858f931070c78fd25cf89c3b58ba5572d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 2e19cd74043f71edca4dc5d12ad2caf704e787630a84a80f40b759877902e76d
[INFO] running `Command { std: "docker" "start" "-a" "2e19cd74043f71edca4dc5d12ad2caf704e787630a84a80f40b759877902e76d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking proc-macro2 v1.0.17
[INFO] [stderr]     Checking quote v1.0.6
[INFO] [stderr]     Checking displaydoc v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking trybuild v1.0.27
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.02s
[INFO] running `Command { std: "docker" "inspect" "2e19cd74043f71edca4dc5d12ad2caf704e787630a84a80f40b759877902e76d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e19cd74043f71edca4dc5d12ad2caf704e787630a84a80f40b759877902e76d", kill_on_drop: false }`
[INFO] [stdout] 2e19cd74043f71edca4dc5d12ad2caf704e787630a84a80f40b759877902e76d