[INFO] fetching crate keebrs 0.3.0...
[INFO] checking keebrs-0.3.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate keebrs 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate keebrs 0.3.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate keebrs 0.3.0
[INFO] finished tweaking crates.io crate keebrs 0.3.0
[INFO] tweaked toml for crates.io crate keebrs 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded polymer-core v0.1.0
[INFO] [stderr]   Downloaded async-codec v0.4.0
[INFO] [stderr]   Downloaded postcard v0.5.2
[INFO] [stderr]   Downloaded postcard-cobs v0.1.5-pre
[INFO] [stderr]   Downloaded newtype v0.2.1
[INFO] [stderr]   Downloaded derive-newtype v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8e562edee8be62d3e32473c8d5a283b08bf3d28a543b286e990595cbe5aedfd
[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" "d8e562edee8be62d3e32473c8d5a283b08bf3d28a543b286e990595cbe5aedfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8e562edee8be62d3e32473c8d5a283b08bf3d28a543b286e990595cbe5aedfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8e562edee8be62d3e32473c8d5a283b08bf3d28a543b286e990595cbe5aedfd", kill_on_drop: false }`
[INFO] [stdout] d8e562edee8be62d3e32473c8d5a283b08bf3d28a543b286e990595cbe5aedfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a24d7c7044902ffb9e89b200b0ec7a00f15c92733fd55ef662b6ee10172baec3
[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" "a24d7c7044902ffb9e89b200b0ec7a00f15c92733fd55ef662b6ee10172baec3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking usb-device v0.2.8
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking polymer-core v0.1.0
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking rgb v0.8.27
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking smart-leds-trait v0.2.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking smart-leds v0.3.0
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking async-codec v0.4.0
[INFO] [stderr]    Compiling derive-newtype v0.2.3
[INFO] [stderr]     Checking newtype v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking pin-project v0.4.28
[INFO] [stderr]     Checking postcard v0.5.2
[INFO] [stderr]     Checking keebrs v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.17s
[INFO] running `Command { std: "docker" "inspect" "a24d7c7044902ffb9e89b200b0ec7a00f15c92733fd55ef662b6ee10172baec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a24d7c7044902ffb9e89b200b0ec7a00f15c92733fd55ef662b6ee10172baec3", kill_on_drop: false }`
[INFO] [stdout] a24d7c7044902ffb9e89b200b0ec7a00f15c92733fd55ef662b6ee10172baec3