[INFO] cloning repository https://github.com/pudnax/gpu_collatz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pudnax/gpu_collatz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpudnax%2Fgpu_collatz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpudnax%2Fgpu_collatz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdaa8fb5d430373888001114ceb315d0b94fc228
[INFO] checking pudnax/gpu_collatz against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpudnax%2Fgpu_collatz" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pudnax/gpu_collatz on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pudnax/gpu_collatz
[INFO] finished tweaking git repo https://github.com/pudnax/gpu_collatz
[INFO] tweaked toml for git repo https://github.com/pudnax/gpu_collatz written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/pudnax/gpu_collatz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3b1f9c60db67c287543d545c42c41e3b336a1c5ddc73f201db948c9015c0040
[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" "d3b1f9c60db67c287543d545c42c41e3b336a1c5ddc73f201db948c9015c0040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3b1f9c60db67c287543d545c42c41e3b336a1c5ddc73f201db948c9015c0040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3b1f9c60db67c287543d545c42c41e3b336a1c5ddc73f201db948c9015c0040", kill_on_drop: false }`
[INFO] [stdout] d3b1f9c60db67c287543d545c42c41e3b336a1c5ddc73f201db948c9015c0040
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51fc66c670705b3d1e9af5cc48808435481a5920054f24ea9633358c60969d08
[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" "51fc66c670705b3d1e9af5cc48808435481a5920054f24ea9633358c60969d08", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking libloading v0.6.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking wgpu-types v0.6.1
[INFO] [stderr]     Checking ash v0.31.0
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking spirv_headers v1.5.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]     Checking gfx-memory v0.2.2
[INFO] [stderr]     Checking gfx-descriptor v0.2.0
[INFO] [stderr]     Checking gfx-backend-empty v0.6.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking gfx-backend-vulkan v0.6.5
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking naga v0.2.0
[INFO] [stderr]     Checking pin-project v1.0.1
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking wgpu-core v0.6.5
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking futures v0.3.7
[INFO] [stderr]     Checking ash v0.1.0 (/opt/rustwide/workdir/ash-collatz)
[INFO] [stderr]     Checking wgpu v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]     Checking wgpu-subscriber v0.1.0
[INFO] [stderr]     Checking wgpu v0.1.0 (/opt/rustwide/workdir/wgpu-collatz)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 55s
[INFO] running `Command { std: "docker" "inspect" "51fc66c670705b3d1e9af5cc48808435481a5920054f24ea9633358c60969d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fc66c670705b3d1e9af5cc48808435481a5920054f24ea9633358c60969d08", kill_on_drop: false }`
[INFO] [stdout] 51fc66c670705b3d1e9af5cc48808435481a5920054f24ea9633358c60969d08