[INFO] fetching crate sudoku-variants 0.1.0...
[INFO] checking sudoku-variants-0.1.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate sudoku-variants 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate sudoku-variants 0.1.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sudoku-variants 0.1.0
[INFO] finished tweaking crates.io crate sudoku-variants 0.1.0
[INFO] tweaked toml for crates.io crate sudoku-variants 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 768e4e30102543e1146f83a72dd40f6e4ce590e438c3be05d2413b740b7b903e
[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" "768e4e30102543e1146f83a72dd40f6e4ce590e438c3be05d2413b740b7b903e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "768e4e30102543e1146f83a72dd40f6e4ce590e438c3be05d2413b740b7b903e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "768e4e30102543e1146f83a72dd40f6e4ce590e438c3be05d2413b740b7b903e", kill_on_drop: false }`
[INFO] [stdout] 768e4e30102543e1146f83a72dd40f6e4ce590e438c3be05d2413b740b7b903e
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c04b7b04518700a340b3c562d38e88fb9f2f92a2dc4e72c9735a2c2cc130e5df
[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" "c04b7b04518700a340b3c562d38e88fb9f2f92a2dc4e72c9735a2c2cc130e5df", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rayon v1.4.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking sudoku-variants v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.40s
[INFO] running `Command { std: "docker" "inspect" "c04b7b04518700a340b3c562d38e88fb9f2f92a2dc4e72c9735a2c2cc130e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04b7b04518700a340b3c562d38e88fb9f2f92a2dc4e72c9735a2c2cc130e5df", kill_on_drop: false }`
[INFO] [stdout] c04b7b04518700a340b3c562d38e88fb9f2f92a2dc4e72c9735a2c2cc130e5df