[INFO] fetching crate unreal_rust_compile_demo 0.1.0...
[INFO] checking unreal_rust_compile_demo-0.1.0 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate unreal_rust_compile_demo 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate unreal_rust_compile_demo 0.1.0 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unreal_rust_compile_demo 0.1.0
[INFO] finished tweaking crates.io crate unreal_rust_compile_demo 0.1.0
[INFO] tweaked toml for crates.io crate unreal_rust_compile_demo 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate unreal_rust_compile_demo 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6cec06d2eb78bc34f9a94a41e5c4ee58196b7b1a78f7d25d13fb1a875e2d0e0
[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" "f6cec06d2eb78bc34f9a94a41e5c4ee58196b7b1a78f7d25d13fb1a875e2d0e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6cec06d2eb78bc34f9a94a41e5c4ee58196b7b1a78f7d25d13fb1a875e2d0e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6cec06d2eb78bc34f9a94a41e5c4ee58196b7b1a78f7d25d13fb1a875e2d0e0", kill_on_drop: false }`
[INFO] [stdout] f6cec06d2eb78bc34f9a94a41e5c4ee58196b7b1a78f7d25d13fb1a875e2d0e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f184f99d39d8d01fcec3726b7f105919b2ec7756154723921f6b698dc3cbb30
[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" "1f184f99d39d8d01fcec3726b7f105919b2ec7756154723921f6b698dc3cbb30", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cbindgen v0.12.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking unreal_rust_compile_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.75s
[INFO] running `Command { std: "docker" "inspect" "1f184f99d39d8d01fcec3726b7f105919b2ec7756154723921f6b698dc3cbb30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f184f99d39d8d01fcec3726b7f105919b2ec7756154723921f6b698dc3cbb30", kill_on_drop: false }`
[INFO] [stdout] 1f184f99d39d8d01fcec3726b7f105919b2ec7756154723921f6b698dc3cbb30