[INFO] fetching crate ckb-merkle-mountain-range 0.3.0...
[INFO] checking ckb-merkle-mountain-range-0.3.0 against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] extracting crate ckb-merkle-mountain-range 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ckb-merkle-mountain-range 0.3.0 on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ckb-merkle-mountain-range 0.3.0
[INFO] finished tweaking crates.io crate ckb-merkle-mountain-range 0.3.0
[INFO] tweaked toml for crates.io crate ckb-merkle-mountain-range 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eb0be1bcb0ea0014141073dfbec4baab13c2a625c2d21b7a366fe7ef5850ed9b
[INFO] running `"docker" "start" "-a" "eb0be1bcb0ea0014141073dfbec4baab13c2a625c2d21b7a366fe7ef5850ed9b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking faster-hex v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking ckb-merkle-mountain-range v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking criterion-plot v0.4.2
[INFO] [stderr]    Compiling blake2b-rs v0.1.5
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking criterion v0.3.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.78s
[INFO] running `"docker" "inspect" "eb0be1bcb0ea0014141073dfbec4baab13c2a625c2d21b7a366fe7ef5850ed9b"`
[INFO] running `"docker" "rm" "-f" "eb0be1bcb0ea0014141073dfbec4baab13c2a625c2d21b7a366fe7ef5850ed9b"`
[INFO] [stdout] eb0be1bcb0ea0014141073dfbec4baab13c2a625c2d21b7a366fe7ef5850ed9b