[INFO] fetching crate kurobako 0.2.6...
[INFO] checking kurobako-0.2.6 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate kurobako 0.2.6 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate kurobako 0.2.6 on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kurobako 0.2.6
[INFO] finished tweaking crates.io crate kurobako 0.2.6
[INFO] tweaked toml for crates.io crate kurobako 0.2.6 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate kurobako 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4704382ee81a7bd7127b5765fb23d8ba70d4c8b89f08daf00ec9e186db4b2b1a
[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" "4704382ee81a7bd7127b5765fb23d8ba70d4c8b89f08daf00ec9e186db4b2b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4704382ee81a7bd7127b5765fb23d8ba70d4c8b89f08daf00ec9e186db4b2b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4704382ee81a7bd7127b5765fb23d8ba70d4c8b89f08daf00ec9e186db4b2b1a", kill_on_drop: false }`
[INFO] [stdout] 4704382ee81a7bd7127b5765fb23d8ba70d4c8b89f08daf00ec9e186db4b2b1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 860f804a5f0b332037a88cf497c957d9e3c9edc65869023f24c2c04391f7cdd4
[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" "860f804a5f0b332037a88cf497c957d9e3c9edc65869023f24c2c04391f7cdd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking itertools v0.8.2
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[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling rlua v0.17.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking ordered-float v2.0.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking rustats v0.1.1
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking bytecodec v0.4.13
[INFO] [stderr]     Checking hdf5file v0.1.1
[INFO] [stderr]     Checking yamakan v0.1.1
[INFO] [stderr]     Checking structopt v0.3.17
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking randomforest v0.1.6
[INFO] [stderr]     Checking protobuf_codec v0.2.8
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking kurobako_core v0.1.8
[INFO] [stderr]     Checking nasbench v0.1.2
[INFO] [stderr]     Checking kurobako_problems v0.1.10
[INFO] [stderr]     Checking kurobako_solvers v0.2.0
[INFO] [stderr]     Checking kurobako v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] running `Command { std: "docker" "inspect" "860f804a5f0b332037a88cf497c957d9e3c9edc65869023f24c2c04391f7cdd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "860f804a5f0b332037a88cf497c957d9e3c9edc65869023f24c2c04391f7cdd4", kill_on_drop: false }`
[INFO] [stdout] 860f804a5f0b332037a88cf497c957d9e3c9edc65869023f24c2c04391f7cdd4