[INFO] fetching crate kurobako_solvers 0.2.2...
[INFO] checking kurobako_solvers-0.2.2 against master#49b6ac01d6f4c3da812039ae846407a20961aa4c for pr-154887
[INFO] extracting crate kurobako_solvers 0.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate kurobako_solvers 0.2.2
[INFO] finished tweaking crates.io crate kurobako_solvers 0.2.2
[INFO] tweaked toml for crates.io crate kurobako_solvers 0.2.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate kurobako_solvers 0.2.2 on toolchain 49b6ac01d6f4c3da812039ae846407a20961aa4c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 99 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding trackable v0.2.24 (available: v1.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yamakan v0.2.0
[INFO] [stderr]   Downloaded kurobako_core v0.1.12
[INFO] [stderr]   Downloaded rlua v0.17.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed6e5c1179c465aa7e39fb7f6e68da4e2a4b80cecf83c8c90e41dc6470a060c2
[INFO] running `Command { std: "docker" "start" "-a" "ed6e5c1179c465aa7e39fb7f6e68da4e2a4b80cecf83c8c90e41dc6470a060c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed6e5c1179c465aa7e39fb7f6e68da4e2a4b80cecf83c8c90e41dc6470a060c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed6e5c1179c465aa7e39fb7f6e68da4e2a4b80cecf83c8c90e41dc6470a060c2", kill_on_drop: false }`
[INFO] [stdout] ed6e5c1179c465aa7e39fb7f6e68da4e2a4b80cecf83c8c90e41dc6470a060c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9eeffb0e1c7f48499935fc1794043e91e2b8610904bc9652b91821f5562a7a33
[INFO] running `Command { std: "docker" "start" "-a" "9eeffb0e1c7f48499935fc1794043e91e2b8610904bc9652b91821f5562a7a33", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling rlua v0.17.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking trackable v1.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking trackable v0.2.24
[INFO] [stderr]     Checking yamakan v0.2.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking kurobako_core v0.1.12
[INFO] [stderr]     Checking kurobako_solvers v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.63s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rlua v0.17.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "9eeffb0e1c7f48499935fc1794043e91e2b8610904bc9652b91821f5562a7a33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eeffb0e1c7f48499935fc1794043e91e2b8610904bc9652b91821f5562a7a33", kill_on_drop: false }`
[INFO] [stdout] 9eeffb0e1c7f48499935fc1794043e91e2b8610904bc9652b91821f5562a7a33