[INFO] fetching crate merkletree-rs 0.0.3...
[INFO] checking merkletree-rs-0.0.3 against try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] extracting crate merkletree-rs 0.0.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate merkletree-rs 0.0.3 on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkletree-rs 0.0.3
[INFO] finished tweaking crates.io crate merkletree-rs 0.0.3
[INFO] tweaked toml for crates.io crate merkletree-rs 0.0.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64890d7c38add3b2901b7f6397adbc0860a52b2461a59ac5731d0b51e0d05cfd
[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" "64890d7c38add3b2901b7f6397adbc0860a52b2461a59ac5731d0b51e0d05cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64890d7c38add3b2901b7f6397adbc0860a52b2461a59ac5731d0b51e0d05cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64890d7c38add3b2901b7f6397adbc0860a52b2461a59ac5731d0b51e0d05cfd", kill_on_drop: false }`
[INFO] [stdout] 64890d7c38add3b2901b7f6397adbc0860a52b2461a59ac5731d0b51e0d05cfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a93cdb79dab5925833a8087720cdb8ac1fbe073b8b9c800da218e7e318ae74f6
[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" "a93cdb79dab5925833a8087720cdb8ac1fbe073b8b9c800da218e7e318ae74f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking integer-encoding v1.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]     Checking bitreader v0.3.2
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking snap v0.2.5
[INFO] [stderr]     Checking tiny-keccak v1.5.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rusty-leveldb v0.2.7
[INFO] [stderr]     Checking merkletree-rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.98s
[INFO] running `Command { std: "docker" "inspect" "a93cdb79dab5925833a8087720cdb8ac1fbe073b8b9c800da218e7e318ae74f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a93cdb79dab5925833a8087720cdb8ac1fbe073b8b9c800da218e7e318ae74f6", kill_on_drop: false }`
[INFO] [stdout] a93cdb79dab5925833a8087720cdb8ac1fbe073b8b9c800da218e7e318ae74f6