[INFO] fetching crate advancedresearch-tree_mem_sort 0.2.0...
[INFO] checking advancedresearch-tree_mem_sort-0.2.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate advancedresearch-tree_mem_sort 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate advancedresearch-tree_mem_sort 0.2.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate advancedresearch-tree_mem_sort 0.2.0
[INFO] finished tweaking crates.io crate advancedresearch-tree_mem_sort 0.2.0
[INFO] tweaked toml for crates.io crate advancedresearch-tree_mem_sort 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate advancedresearch-tree_mem_sort 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f70d20c6291b9f1f6503fffc3eb438a201519a75ae788a2d26dc1e818270300
[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" "4f70d20c6291b9f1f6503fffc3eb438a201519a75ae788a2d26dc1e818270300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f70d20c6291b9f1f6503fffc3eb438a201519a75ae788a2d26dc1e818270300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f70d20c6291b9f1f6503fffc3eb438a201519a75ae788a2d26dc1e818270300", kill_on_drop: false }`
[INFO] [stdout] 4f70d20c6291b9f1f6503fffc3eb438a201519a75ae788a2d26dc1e818270300
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] bffd762b31f0218796d5078619df95fd0c63029861da7fd4e66a4b2d1693da8e
[INFO] running `Command { std: "docker" "start" "-a" "bffd762b31f0218796d5078619df95fd0c63029861da7fd4e66a4b2d1693da8e", kill_on_drop: false }`
[INFO] [stderr]     Checking advancedresearch-tree_mem_sort v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "bffd762b31f0218796d5078619df95fd0c63029861da7fd4e66a4b2d1693da8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bffd762b31f0218796d5078619df95fd0c63029861da7fd4e66a4b2d1693da8e", kill_on_drop: false }`
[INFO] [stdout] bffd762b31f0218796d5078619df95fd0c63029861da7fd4e66a4b2d1693da8e