[INFO] fetching crate userfaultfd 0.3.1...
[INFO] checking userfaultfd-0.3.1 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate userfaultfd 0.3.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate userfaultfd 0.3.1 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate userfaultfd 0.3.1
[INFO] finished tweaking crates.io crate userfaultfd 0.3.1
[INFO] tweaked toml for crates.io crate userfaultfd 0.3.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate userfaultfd 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libloading v0.6.7
[INFO] [stderr]   Downloaded thiserror-impl v1.0.21
[INFO] [stderr]   Downloaded regex v1.4.1
[INFO] [stderr]   Downloaded syn v1.0.44
[INFO] [stderr]   Downloaded clang-sys v1.0.3
[INFO] [stderr]   Downloaded libc v0.2.79
[INFO] [stderr]   Downloaded regex-syntax v0.6.20
[INFO] [stderr]   Downloaded cc v1.0.61
[INFO] [stderr]   Downloaded thiserror v1.0.21
[INFO] [stderr]   Downloaded userfaultfd-sys v0.3.0
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6fd23a946a801df8856f7b7c039146e7f2d3c35a78b12fb523038602f1c3024
[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" "a6fd23a946a801df8856f7b7c039146e7f2d3c35a78b12fb523038602f1c3024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6fd23a946a801df8856f7b7c039146e7f2d3c35a78b12fb523038602f1c3024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6fd23a946a801df8856f7b7c039146e7f2d3c35a78b12fb523038602f1c3024", kill_on_drop: false }`
[INFO] [stdout] a6fd23a946a801df8856f7b7c039146e7f2d3c35a78b12fb523038602f1c3024
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92e0ecc0a2ec442f0d54e2d77a5ef3ddcc6289062332eee924154854923adfe6
[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" "92e0ecc0a2ec442f0d54e2d77a5ef3ddcc6289062332eee924154854923adfe6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling clang-sys v1.0.3
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]    Compiling userfaultfd-sys v0.3.0
[INFO] [stderr]     Checking userfaultfd v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.92s
[INFO] running `Command { std: "docker" "inspect" "92e0ecc0a2ec442f0d54e2d77a5ef3ddcc6289062332eee924154854923adfe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e0ecc0a2ec442f0d54e2d77a5ef3ddcc6289062332eee924154854923adfe6", kill_on_drop: false }`
[INFO] [stdout] 92e0ecc0a2ec442f0d54e2d77a5ef3ddcc6289062332eee924154854923adfe6