[INFO] fetching crate ukebox 0.6.0...
[INFO] checking ukebox-0.6.0 against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] extracting crate ukebox 0.6.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ukebox 0.6.0 on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ukebox 0.6.0
[INFO] finished tweaking crates.io crate ukebox 0.6.0
[INFO] tweaked toml for crates.io crate ukebox 0.6.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate ukebox 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_cmd v1.0.3
[INFO] [stderr]   Downloaded predicates-core v1.0.2
[INFO] [stderr]   Downloaded indoc v1.0.3
[INFO] [stderr]   Downloaded predicates-tree v1.0.2
[INFO] [stderr]   Downloaded unindent v0.1.7
[INFO] [stderr]   Downloaded float-cmp v0.8.0
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded predicates v1.0.7
[INFO] [stderr]   Downloaded rstest v0.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "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] 55f0ff6e2d084c7fbfa937f8f2c55a8108bfbd77929da1b4cc6562633e5843ae
[INFO] running `Command { std: "docker" "start" "-a" "55f0ff6e2d084c7fbfa937f8f2c55a8108bfbd77929da1b4cc6562633e5843ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55f0ff6e2d084c7fbfa937f8f2c55a8108bfbd77929da1b4cc6562633e5843ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f0ff6e2d084c7fbfa937f8f2c55a8108bfbd77929da1b4cc6562633e5843ae", kill_on_drop: false }`
[INFO] [stdout] 55f0ff6e2d084c7fbfa937f8f2c55a8108bfbd77929da1b4cc6562633e5843ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2253bfb4b91f4f7b972e9c36543acd5fe0e6c128802716c6caa5d7aee73601e
[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" "f2253bfb4b91f4f7b972e9c36543acd5fe0e6c128802716c6caa5d7aee73601e", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking predicates v1.0.7
[INFO] [stderr]     Checking assert_cmd v1.0.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking ukebox v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.51s
[INFO] running `Command { std: "docker" "inspect" "f2253bfb4b91f4f7b972e9c36543acd5fe0e6c128802716c6caa5d7aee73601e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2253bfb4b91f4f7b972e9c36543acd5fe0e6c128802716c6caa5d7aee73601e", kill_on_drop: false }`
[INFO] [stdout] f2253bfb4b91f4f7b972e9c36543acd5fe0e6c128802716c6caa5d7aee73601e