[INFO] fetching crate covert_client 0.1.5...
[INFO] checking covert_client-0.1.5 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate covert_client 0.1.5 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate covert_client 0.1.5 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate covert_client 0.1.5
[INFO] finished tweaking crates.io crate covert_client 0.1.5
[INFO] tweaked toml for crates.io crate covert_client 0.1.5 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate covert_client 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.39.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.39.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.39.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.39.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.39.0
[INFO] [stderr]   Downloaded windows v0.39.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f7da56af952569efff3fdd24a791d0ad455be1b1038dd0288e94199876537c6
[INFO] running `Command { std: "docker" "start" "-a" "4f7da56af952569efff3fdd24a791d0ad455be1b1038dd0288e94199876537c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f7da56af952569efff3fdd24a791d0ad455be1b1038dd0288e94199876537c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f7da56af952569efff3fdd24a791d0ad455be1b1038dd0288e94199876537c6", kill_on_drop: false }`
[INFO] [stdout] 4f7da56af952569efff3fdd24a791d0ad455be1b1038dd0288e94199876537c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7475a5f16fae347739c0859f846b5ca58ade2ae3b93655c841d8799301d26381
[INFO] running `Command { std: "docker" "start" "-a" "7475a5f16fae347739c0859f846b5ca58ade2ae3b93655c841d8799301d26381", kill_on_drop: false }`
[INFO] [stderr]    Compiling windows_x86_64_gnu v0.39.0
[INFO] [stdout] error[E0463]: can't find crate for `core`
[INFO] [stdout]   |
[INFO] [stdout]   = note: the `x86_64-pc-windows-gnu` target may not be installed
[INFO] [stdout]   = help: consider downloading the target with `rustup target add x86_64-pc-windows-gnu`
[INFO] [stdout]   = help: consider building the standard library from source with `cargo build -Zbuild-std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `windows_x86_64_gnu` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7475a5f16fae347739c0859f846b5ca58ade2ae3b93655c841d8799301d26381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7475a5f16fae347739c0859f846b5ca58ade2ae3b93655c841d8799301d26381", kill_on_drop: false }`
[INFO] [stdout] 7475a5f16fae347739c0859f846b5ca58ade2ae3b93655c841d8799301d26381
