[INFO] fetching crate color-backtrace 0.4.2...
[INFO] checking color-backtrace-0.4.2 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate color-backtrace 0.4.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate color-backtrace 0.4.2 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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-2/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 085bd627d13c8b40f68c5f188b6f324774ca1c5d659ed6a6bdf646862d5f8744
[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" "085bd627d13c8b40f68c5f188b6f324774ca1c5d659ed6a6bdf646862d5f8744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "085bd627d13c8b40f68c5f188b6f324774ca1c5d659ed6a6bdf646862d5f8744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "085bd627d13c8b40f68c5f188b6f324774ca1c5d659ed6a6bdf646862d5f8744", kill_on_drop: false }`
[INFO] [stdout] 085bd627d13c8b40f68c5f188b6f324774ca1c5d659ed6a6bdf646862d5f8744
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 9e571d359f41cb2d9c508cbe1931c8008b87590dc3e85c415ac531a236d3f4eb
[INFO] running `Command { std: "docker" "start" "-a" "9e571d359f41cb2d9c508cbe1931c8008b87590dc3e85c415ac531a236d3f4eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]     Checking object v0.19.0
[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 12.03s
[INFO] running `Command { std: "docker" "inspect" "9e571d359f41cb2d9c508cbe1931c8008b87590dc3e85c415ac531a236d3f4eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e571d359f41cb2d9c508cbe1931c8008b87590dc3e85c415ac531a236d3f4eb", kill_on_drop: false }`
[INFO] [stdout] 9e571d359f41cb2d9c508cbe1931c8008b87590dc3e85c415ac531a236d3f4eb