[INFO] fetching crate lsk 0.2.0...
[INFO] checking lsk-0.2.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate lsk 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate lsk 0.2.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lsk 0.2.0
[INFO] finished tweaking crates.io crate lsk 0.2.0
[INFO] tweaked toml for crates.io crate lsk 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate lsk 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d012e7fe3c970800883da51aba511f9e41173001b506d7bcc89c8329e5e7da64
[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" "d012e7fe3c970800883da51aba511f9e41173001b506d7bcc89c8329e5e7da64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d012e7fe3c970800883da51aba511f9e41173001b506d7bcc89c8329e5e7da64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d012e7fe3c970800883da51aba511f9e41173001b506d7bcc89c8329e5e7da64", kill_on_drop: false }`
[INFO] [stdout] d012e7fe3c970800883da51aba511f9e41173001b506d7bcc89c8329e5e7da64
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] bf81b8ca97099b258fc7019cd8f1df6fd58407a795b6b670d354099b3a3cb9a2
[INFO] running `Command { std: "docker" "start" "-a" "bf81b8ca97099b258fc7019cd8f1df6fd58407a795b6b670d354099b3a3cb9a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking crc8 v0.1.1
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking cmd_lib v0.7.8
[INFO] [stderr]     Checking seahorse v0.7.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking xdotool v0.0.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking term_grid v0.1.7
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking fuzzy-matcher v0.3.4
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking md2 v0.8.0
[INFO] [stderr]     Checking md4 v0.8.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking easy-hasher v2.1.1
[INFO] [stderr]     Checking lsk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.30s
[INFO] running `Command { std: "docker" "inspect" "bf81b8ca97099b258fc7019cd8f1df6fd58407a795b6b670d354099b3a3cb9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf81b8ca97099b258fc7019cd8f1df6fd58407a795b6b670d354099b3a3cb9a2", kill_on_drop: false }`
[INFO] [stdout] bf81b8ca97099b258fc7019cd8f1df6fd58407a795b6b670d354099b3a3cb9a2