[INFO] fetching crate cargo 0.54.0...
[INFO] building cargo-0.54.0 against try#8a4c071f46be56484e9723bd8f1e5eea08177963+rustflags={-Zprofile-closures} for pr-87066
[INFO] extracting crate cargo 0.54.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cargo 0.54.0 on toolchain 8a4c071f46be56484e9723bd8f1e5eea08177963
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8a4c071f46be56484e9723bd8f1e5eea08177963" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo 0.54.0
[INFO] finished tweaking crates.io crate cargo 0.54.0
[INFO] tweaked toml for crates.io crate cargo 0.54.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cargo 0.54.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8a4c071f46be56484e9723bd8f1e5eea08177963" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.1.0
[INFO] [stderr]   Downloaded cargo-util v0.1.0
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded bitmaps v2.1.0
[INFO] [stderr]   Downloaded globset v0.4.7
[INFO] [stderr]   Downloaded fwdansi v1.1.0
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded vte v0.3.3
[INFO] [stderr]   Downloaded crypto-hash v0.3.4
[INFO] [stderr]   Downloaded git2-curl v0.14.1
[INFO] [stderr]   Downloaded im-rc v15.0.0
[INFO] [stderr]   Downloaded tar v0.4.35
[INFO] [stderr]   Downloaded serde_ignored v0.1.2
[INFO] [stderr]   Downloaded sized-chunks v0.6.5
[INFO] [stderr]   Downloaded crates-io v0.33.0
[INFO] [stderr]   Downloaded rustfix v0.5.1
[INFO] [stderr]   Downloaded vcpkg v0.2.14
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded shell-escape v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8a4c071f46be56484e9723bd8f1e5eea08177963" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3253b9bb3b104f4b68c4534ea3ccec2fdeea03598284597ec1091a751f93a74d
[INFO] running `Command { std: "docker" "start" "-a" "3253b9bb3b104f4b68c4534ea3ccec2fdeea03598284597ec1091a751f93a74d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3253b9bb3b104f4b68c4534ea3ccec2fdeea03598284597ec1091a751f93a74d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3253b9bb3b104f4b68c4534ea3ccec2fdeea03598284597ec1091a751f93a74d", kill_on_drop: false }`
[INFO] [stdout] 3253b9bb3b104f4b68c4534ea3ccec2fdeea03598284597ec1091a751f93a74d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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 {-Zprofile-closures}" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8a4c071f46be56484e9723bd8f1e5eea08177963" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c704dbc7ed9211ec4b61d9909ec73840ddccfd6f9e68934c8d5e1522c08d4de
[INFO] running `Command { std: "docker" "start" "-a" "5c704dbc7ed9211ec4b61d9909ec73840ddccfd6f9e68934c8d5e1522c08d4de", kill_on_drop: false }`
[INFO] [stderr] error: failed to run `rustc` to learn about target-specific information
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc - --crate-name ___ --print=file-names --cap-lints=forbid '{-Zprofile-closures}' --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: multiple input filenames provided (first two filenames are `-` and `{-Zprofile-closures}`)
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "5c704dbc7ed9211ec4b61d9909ec73840ddccfd6f9e68934c8d5e1522c08d4de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c704dbc7ed9211ec4b61d9909ec73840ddccfd6f9e68934c8d5e1522c08d4de", kill_on_drop: false }`
[INFO] [stdout] 5c704dbc7ed9211ec4b61d9909ec73840ddccfd6f9e68934c8d5e1522c08d4de