[INFO] fetching crate kurobako_core 0.1.8...
[INFO] checking kurobako_core-0.1.8 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate kurobako_core 0.1.8 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate kurobako_core 0.1.8 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kurobako_core 0.1.8
[INFO] finished tweaking crates.io crate kurobako_core 0.1.8
[INFO] tweaked toml for crates.io crate kurobako_core 0.1.8 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66adc2bdea4747ed750fded5e9f6129695a0d2ca3f4dbbf9c93741f97798f9f1
[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" "66adc2bdea4747ed750fded5e9f6129695a0d2ca3f4dbbf9c93741f97798f9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66adc2bdea4747ed750fded5e9f6129695a0d2ca3f4dbbf9c93741f97798f9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66adc2bdea4747ed750fded5e9f6129695a0d2ca3f4dbbf9c93741f97798f9f1", kill_on_drop: false }`
[INFO] [stdout] 66adc2bdea4747ed750fded5e9f6129695a0d2ca3f4dbbf9c93741f97798f9f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 874d191855207342a4a71f87afeeb68e5524d0a66b46c0c2295f0616369e76b4
[INFO] running `Command { std: "docker" "start" "-a" "874d191855207342a4a71f87afeeb68e5524d0a66b46c0c2295f0616369e76b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling rlua v0.17.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking kurobako_core v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "874d191855207342a4a71f87afeeb68e5524d0a66b46c0c2295f0616369e76b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874d191855207342a4a71f87afeeb68e5524d0a66b46c0c2295f0616369e76b4", kill_on_drop: false }`
[INFO] [stdout] 874d191855207342a4a71f87afeeb68e5524d0a66b46c0c2295f0616369e76b4