[INFO] fetching crate x11-screenshot 0.2.0...
[INFO] checking x11-screenshot-0.2.0 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate x11-screenshot 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate x11-screenshot 0.2.0 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate x11-screenshot 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate x11-screenshot 0.2.0
[INFO] tweaked toml for crates.io crate x11-screenshot 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", 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] a2fefdfb3cb6461a0660e9f287bb0a15391498761d71b149a3fa2d32c1e26902
[INFO] running `Command { std: "docker" "start" "-a" "a2fefdfb3cb6461a0660e9f287bb0a15391498761d71b149a3fa2d32c1e26902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2fefdfb3cb6461a0660e9f287bb0a15391498761d71b149a3fa2d32c1e26902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2fefdfb3cb6461a0660e9f287bb0a15391498761d71b149a3fa2d32c1e26902", kill_on_drop: false }`
[INFO] [stdout] a2fefdfb3cb6461a0660e9f287bb0a15391498761d71b149a3fa2d32c1e26902
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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] b117e72936eaf6a1734bc233b62e302e402d72bf3f231c9058bb22a13288603a
[INFO] running `Command { std: "docker" "start" "-a" "b117e72936eaf6a1734bc233b62e302e402d72bf3f231c9058bb22a13288603a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking num-traits v0.2.12
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking x11-screenshot v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `Command { std: "docker" "inspect" "b117e72936eaf6a1734bc233b62e302e402d72bf3f231c9058bb22a13288603a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b117e72936eaf6a1734bc233b62e302e402d72bf3f231c9058bb22a13288603a", kill_on_drop: false }`
[INFO] [stdout] b117e72936eaf6a1734bc233b62e302e402d72bf3f231c9058bb22a13288603a