[INFO] fetching crate x11-screenshot 0.2.1...
[INFO] checking x11-screenshot-0.2.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate x11-screenshot 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate x11-screenshot 0.2.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate x11-screenshot 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate x11-screenshot 0.2.1
[INFO] tweaked toml for crates.io crate x11-screenshot 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate x11-screenshot 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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 num-rational v0.3.2
[INFO] [stderr]   Downloaded num-iter v0.1.42
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded bytemuck v1.5.0
[INFO] [stderr]   Downloaded image v0.23.13
[INFO] [stderr]   Downloaded x11 v2.18.2
[INFO] [stderr]   Downloaded color_quant v1.1.0
[INFO] [stderr]   Downloaded pkg-config v0.3.19
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded libc v0.2.85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff7d25057000534fa70e44a9e3a16e95eee10b398d605603ee2fbf97939fefcf
[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" "ff7d25057000534fa70e44a9e3a16e95eee10b398d605603ee2fbf97939fefcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff7d25057000534fa70e44a9e3a16e95eee10b398d605603ee2fbf97939fefcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff7d25057000534fa70e44a9e3a16e95eee10b398d605603ee2fbf97939fefcf", kill_on_drop: false }`
[INFO] [stdout] ff7d25057000534fa70e44a9e3a16e95eee10b398d605603ee2fbf97939fefcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] b942eba1edb20a0e4a0d2870530d757d9ccb075f398821b4b79fcb32c578b373
[INFO] running `Command { std: "docker" "start" "-a" "b942eba1edb20a0e4a0d2870530d757d9ccb075f398821b4b79fcb32c578b373", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking bytemuck v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking image v0.23.13
[INFO] [stderr]     Checking x11-screenshot v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.57s
[INFO] running `Command { std: "docker" "inspect" "b942eba1edb20a0e4a0d2870530d757d9ccb075f398821b4b79fcb32c578b373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b942eba1edb20a0e4a0d2870530d757d9ccb075f398821b4b79fcb32c578b373", kill_on_drop: false }`
[INFO] [stdout] b942eba1edb20a0e4a0d2870530d757d9ccb075f398821b4b79fcb32c578b373