[INFO] fetching crate cargo-wheel 0.2.0...
[INFO] checking cargo-wheel-0.2.0 against beta for pr-78714
[INFO] extracting crate cargo-wheel 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cargo-wheel 0.2.0 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 cargo-wheel 0.2.0
[INFO] finished tweaking crates.io crate cargo-wheel 0.2.0
[INFO] tweaked toml for crates.io crate cargo-wheel 0.2.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] a8a953db284eb0345604a22b3fbb78feada11bf1abb22d1d956abab5cb21d7da
[INFO] running `Command { std: "docker" "start" "-a" "a8a953db284eb0345604a22b3fbb78feada11bf1abb22d1d956abab5cb21d7da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a953db284eb0345604a22b3fbb78feada11bf1abb22d1d956abab5cb21d7da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a953db284eb0345604a22b3fbb78feada11bf1abb22d1d956abab5cb21d7da", kill_on_drop: false }`
[INFO] [stdout] a8a953db284eb0345604a22b3fbb78feada11bf1abb22d1d956abab5cb21d7da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] e0dbcdb9f66be4e2db22b690867fe8e16424533a90b1a764baec6a4303ba3e83
[INFO] running `Command { std: "docker" "start" "-a" "e0dbcdb9f66be4e2db22b690867fe8e16424533a90b1a764baec6a4303ba3e83", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking home v0.3.4
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking bytesize v1.0.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.19
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking opener v0.3.2
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]    Compiling serde_derive v1.0.58
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_ignored v0.0.4
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking crates-io v0.20.0
[INFO] [stderr]     Checking cbindgen v0.6.8
[INFO] [stderr]     Checking git2 v0.7.5
[INFO] [stderr]     Checking git2-curl v0.8.2
[INFO] [stderr]     Checking cargo v0.32.0
[INFO] [stderr]     Checking cargo-wheel v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 01s
[INFO] running `Command { std: "docker" "inspect" "e0dbcdb9f66be4e2db22b690867fe8e16424533a90b1a764baec6a4303ba3e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0dbcdb9f66be4e2db22b690867fe8e16424533a90b1a764baec6a4303ba3e83", kill_on_drop: false }`
[INFO] [stdout] e0dbcdb9f66be4e2db22b690867fe8e16424533a90b1a764baec6a4303ba3e83