[INFO] fetching crate bytify-impl 0.3.1...
[INFO] checking bytify-impl-0.3.1 against beta for pr-78714
[INFO] extracting crate bytify-impl 0.3.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate bytify-impl 0.3.1 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 bytify-impl 0.3.1
[INFO] finished tweaking crates.io crate bytify-impl 0.3.1
[INFO] tweaked toml for crates.io crate bytify-impl 0.3.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 400169f6a1a6523304ed3c5fe45edd334f24799db2727ea7164fc4b22e870048
[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" "400169f6a1a6523304ed3c5fe45edd334f24799db2727ea7164fc4b22e870048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "400169f6a1a6523304ed3c5fe45edd334f24799db2727ea7164fc4b22e870048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400169f6a1a6523304ed3c5fe45edd334f24799db2727ea7164fc4b22e870048", kill_on_drop: false }`
[INFO] [stdout] 400169f6a1a6523304ed3c5fe45edd334f24799db2727ea7164fc4b22e870048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 78f9f055789670211724da82c761d12266619c2d85b8d7907e262bdacdf3350b
[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" "78f9f055789670211724da82c761d12266619c2d85b8d7907e262bdacdf3350b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking bytify-impl v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.40s
[INFO] running `Command { std: "docker" "inspect" "78f9f055789670211724da82c761d12266619c2d85b8d7907e262bdacdf3350b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f9f055789670211724da82c761d12266619c2d85b8d7907e262bdacdf3350b", kill_on_drop: false }`
[INFO] [stdout] 78f9f055789670211724da82c761d12266619c2d85b8d7907e262bdacdf3350b