[INFO] fetching crate color-backtrace 0.4.2...
[INFO] checking color-backtrace-0.4.2 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate color-backtrace 0.4.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate color-backtrace 0.4.2 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate color-backtrace 0.4.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate color-backtrace 0.4.2
[INFO] tweaked toml for crates.io crate color-backtrace 0.4.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate color-backtrace 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded addr2line v0.12.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded object v0.19.0
[INFO] [stderr]   Downloaded synstructure v0.12.3
[INFO] [stderr]   Downloaded backtrace v0.3.48
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded failure v0.1.8
[INFO] [stderr]   Downloaded failure_derive v0.1.8
[INFO] [stderr]   Downloaded winapi-util v0.1.5
[INFO] [stderr]   Downloaded termcolor v1.1.0
[INFO] [stderr]   Downloaded libc v0.2.70
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c309580a704fa6d6e547a7265f143dd901a81f8b76138b87145df0bd46bf9df
[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" "2c309580a704fa6d6e547a7265f143dd901a81f8b76138b87145df0bd46bf9df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c309580a704fa6d6e547a7265f143dd901a81f8b76138b87145df0bd46bf9df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c309580a704fa6d6e547a7265f143dd901a81f8b76138b87145df0bd46bf9df", kill_on_drop: false }`
[INFO] [stdout] 2c309580a704fa6d6e547a7265f143dd901a81f8b76138b87145df0bd46bf9df
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1866fd12985fcf61873fa77dac220a05eb2004e575e22f005cf57afe728f58f8
[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" "1866fd12985fcf61873fa77dac220a05eb2004e575e22f005cf57afe728f58f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking color-backtrace v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.99s
[INFO] running `Command { std: "docker" "inspect" "1866fd12985fcf61873fa77dac220a05eb2004e575e22f005cf57afe728f58f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1866fd12985fcf61873fa77dac220a05eb2004e575e22f005cf57afe728f58f8", kill_on_drop: false }`
[INFO] [stdout] 1866fd12985fcf61873fa77dac220a05eb2004e575e22f005cf57afe728f58f8