[INFO] fetching crate backtrace 0.3.56...
[INFO] checking backtrace-0.3.56 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate backtrace 0.3.56 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate backtrace 0.3.56 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtrace 0.3.56
[INFO] removed 0 missing examples
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate backtrace 0.3.56
[INFO] tweaked toml for crates.io crate backtrace 0.3.56 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate backtrace 0.3.56 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b44244145f94c58fb5d54539d8a3cb4caa6188d44fcbafd132d42fa11014d7cf
[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" "b44244145f94c58fb5d54539d8a3cb4caa6188d44fcbafd132d42fa11014d7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b44244145f94c58fb5d54539d8a3cb4caa6188d44fcbafd132d42fa11014d7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b44244145f94c58fb5d54539d8a3cb4caa6188d44fcbafd132d42fa11014d7cf", kill_on_drop: false }`
[INFO] [stdout] b44244145f94c58fb5d54539d8a3cb4caa6188d44fcbafd132d42fa11014d7cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cfd53018a384cab7b53d967c1d4f7895768156b52379dcfeec0e2513fb1ef68
[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" "9cfd53018a384cab7b53d967c1d4f7895768156b52379dcfeec0e2513fb1ef68", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking backtrace v0.3.56 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `Command { std: "docker" "inspect" "9cfd53018a384cab7b53d967c1d4f7895768156b52379dcfeec0e2513fb1ef68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cfd53018a384cab7b53d967c1d4f7895768156b52379dcfeec0e2513fb1ef68", kill_on_drop: false }`
[INFO] [stdout] 9cfd53018a384cab7b53d967c1d4f7895768156b52379dcfeec0e2513fb1ef68