[INFO] fetching crate cxx 1.0.54...
[INFO] testing cxx-1.0.54 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cxx 1.0.54 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cxx 1.0.54 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cxx 1.0.54
[INFO] finished tweaking crates.io crate cxx 1.0.54
[INFO] tweaked toml for crates.io crate cxx 1.0.54 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5a2af2899efe77abe2721aee3ad97ff5ecead57ac12846124b3cbf3fd7ddf5a
[INFO] running `Command { std: "docker" "start" "-a" "e5a2af2899efe77abe2721aee3ad97ff5ecead57ac12846124b3cbf3fd7ddf5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5a2af2899efe77abe2721aee3ad97ff5ecead57ac12846124b3cbf3fd7ddf5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5a2af2899efe77abe2721aee3ad97ff5ecead57ac12846124b3cbf3fd7ddf5a", kill_on_drop: false }`
[INFO] [stdout] e5a2af2899efe77abe2721aee3ad97ff5ecead57ac12846124b3cbf3fd7ddf5a
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 398e7cbc05c0c28516b5886c9e3638b6b2708e7a936fa01612ba8894499e7770
[INFO] running `Command { std: "docker" "start" "-a" "398e7cbc05c0c28516b5886c9e3638b6b2708e7a936fa01612ba8894499e7770", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.54
[INFO] [stderr]    Compiling link-cplusplus v1.0.5
[INFO] [stderr]    Compiling cxx v1.0.54 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.54
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.71s
[INFO] running `Command { std: "docker" "inspect" "398e7cbc05c0c28516b5886c9e3638b6b2708e7a936fa01612ba8894499e7770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "398e7cbc05c0c28516b5886c9e3638b6b2708e7a936fa01612ba8894499e7770", kill_on_drop: false }`
[INFO] [stdout] 398e7cbc05c0c28516b5886c9e3638b6b2708e7a936fa01612ba8894499e7770
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89f6661ff92fe1e3f6ccde4c9364414752a208438c252021db21d6b8e9f58fb8
[INFO] running `Command { std: "docker" "start" "-a" "89f6661ff92fe1e3f6ccde4c9364414752a208438c252021db21d6b8e9f58fb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling scratch v1.0.0
[INFO] [stderr]    Compiling trybuild v1.0.45
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling dissimilar v1.0.2
[INFO] [stderr]    Compiling cxx-test-suite v0.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling cxx-gen v0.7.54
[INFO] [stdout] error: expected item, found `@`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cxx-test-suite-0.0.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | @
[INFO] [stdout]   | ^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cxx-test-suite` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "89f6661ff92fe1e3f6ccde4c9364414752a208438c252021db21d6b8e9f58fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89f6661ff92fe1e3f6ccde4c9364414752a208438c252021db21d6b8e9f58fb8", kill_on_drop: false }`
[INFO] [stdout] 89f6661ff92fe1e3f6ccde4c9364414752a208438c252021db21d6b8e9f58fb8