[INFO] fetching crate sprattus 0.0.1...
[INFO] checking sprattus-0.0.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate sprattus 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sprattus 0.0.1 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 sprattus 0.0.1
[INFO] finished tweaking crates.io crate sprattus 0.0.1
[INFO] tweaked toml for crates.io crate sprattus 0.0.1 written to /workspace/builds/worker-12/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded md5 v0.6.1
[INFO] [stderr]   Downloaded postgres-protocol v0.5.0-alpha.2
[INFO] [stderr]   Downloaded strfmt v0.1.6
[INFO] [stderr]   Downloaded tokio-postgres v0.5.0-alpha.2
[INFO] [stderr]   Downloaded postgres-types v0.1.0-alpha.2
[INFO] [stderr]   Downloaded geo-types v0.4.3
[INFO] [stderr]   Downloaded sprattus-derive v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 342a21dcfe47542a6743a774f27001398f9865238584954a0b056f56a10a03f0
[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" "342a21dcfe47542a6743a774f27001398f9865238584954a0b056f56a10a03f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "342a21dcfe47542a6743a774f27001398f9865238584954a0b056f56a10a03f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "342a21dcfe47542a6743a774f27001398f9865238584954a0b056f56a10a03f0", kill_on_drop: false }`
[INFO] [stdout] 342a21dcfe47542a6743a774f27001398f9865238584954a0b056f56a10a03f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec25fdc65704945f97515a9f9071b274b0b02ebc07c1c70af1cd5a0fd3afdb90
[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" "ec25fdc65704945f97515a9f9071b274b0b02ebc07c1c70af1cd5a0fd3afdb90", kill_on_drop: false }`
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]    Compiling sprattus-derive v0.0.1
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/sprattus-derive-0.0.1/src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | use syn::export::TokenStream2;
[INFO] [stdout]    |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking postgres-protocol v0.5.0-alpha.2
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sprattus-derive` 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" "ec25fdc65704945f97515a9f9071b274b0b02ebc07c1c70af1cd5a0fd3afdb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec25fdc65704945f97515a9f9071b274b0b02ebc07c1c70af1cd5a0fd3afdb90", kill_on_drop: false }`
[INFO] [stdout] ec25fdc65704945f97515a9f9071b274b0b02ebc07c1c70af1cd5a0fd3afdb90
