[INFO] fetching crate yolk 0.6.0...
[INFO] checking yolk-0.6.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate yolk 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yolk 0.6.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yolk 0.6.0
[INFO] finished tweaking crates.io crate yolk 0.6.0
[INFO] tweaked toml for crates.io crate yolk 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate yolk 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_meta v2.1.1
[INFO] [stderr]   Downloaded pest v2.1.1
[INFO] [stderr]   Downloaded yolol_number v0.6.2
[INFO] [stderr]   Downloaded pest_generator v2.1.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.2
[INFO] [stderr]   Downloaded yoloxide v0.4.3
[INFO] running `Command { std: "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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", 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] eefc59ffdddd8e66c0e75972aecadee5dbe6aacdcfe45844dc611fbcc6877130
[INFO] running `Command { std: "docker" "start" "-a" "eefc59ffdddd8e66c0e75972aecadee5dbe6aacdcfe45844dc611fbcc6877130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eefc59ffdddd8e66c0e75972aecadee5dbe6aacdcfe45844dc611fbcc6877130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eefc59ffdddd8e66c0e75972aecadee5dbe6aacdcfe45844dc611fbcc6877130", kill_on_drop: false }`
[INFO] [stdout] eefc59ffdddd8e66c0e75972aecadee5dbe6aacdcfe45844dc611fbcc6877130
[INFO] running `Command { std: "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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f60a828a47f4fc4f6aca570a336acf077b5a478811bb1ed7eaeb2135823425b3
[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" "f60a828a47f4fc4f6aca570a336acf077b5a478811bb1ed7eaeb2135823425b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking yolol_number v0.7.0
[INFO] [stderr]     Checking yolol_number v0.6.2
[INFO] [stderr]     Checking cylon_ast v0.3.2
[INFO] [stderr]     Checking yoloxide v0.4.3
[INFO] [stderr]     Checking yolk v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.77s
[INFO] running `Command { std: "docker" "inspect" "f60a828a47f4fc4f6aca570a336acf077b5a478811bb1ed7eaeb2135823425b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60a828a47f4fc4f6aca570a336acf077b5a478811bb1ed7eaeb2135823425b3", kill_on_drop: false }`
[INFO] [stdout] f60a828a47f4fc4f6aca570a336acf077b5a478811bb1ed7eaeb2135823425b3