[INFO] fetching crate backtrace 0.3.51...
[INFO] checking backtrace-0.3.51 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate backtrace 0.3.51 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate backtrace 0.3.51 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtrace 0.3.51
[INFO] removed 0 missing examples
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate backtrace 0.3.51
[INFO] tweaked toml for crates.io crate backtrace 0.3.51 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate backtrace 0.3.51 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpp_demangle v0.3.0
[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" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] c6a4b622ece5c05a6349bda05c5e9d69481dadbfbef254a96ad3d35e66a8a6a0
[INFO] running `Command { std: "docker" "start" "-a" "c6a4b622ece5c05a6349bda05c5e9d69481dadbfbef254a96ad3d35e66a8a6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6a4b622ece5c05a6349bda05c5e9d69481dadbfbef254a96ad3d35e66a8a6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a4b622ece5c05a6349bda05c5e9d69481dadbfbef254a96ad3d35e66a8a6a0", kill_on_drop: false }`
[INFO] [stdout] c6a4b622ece5c05a6349bda05c5e9d69481dadbfbef254a96ad3d35e66a8a6a0
[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" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcfd45ea5db0fe0f63ea822edac9bfa1624d7a74d41d4223aa63c96da9176826
[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" "bcfd45ea5db0fe0f63ea822edac9bfa1624d7a74d41d4223aa63c96da9176826", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking libloading v0.6.3
[INFO] [stderr]     Checking backtrace v0.3.51 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.86s
[INFO] running `Command { std: "docker" "inspect" "bcfd45ea5db0fe0f63ea822edac9bfa1624d7a74d41d4223aa63c96da9176826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcfd45ea5db0fe0f63ea822edac9bfa1624d7a74d41d4223aa63c96da9176826", kill_on_drop: false }`
[INFO] [stdout] bcfd45ea5db0fe0f63ea822edac9bfa1624d7a74d41d4223aa63c96da9176826