[INFO] fetching crate bytebuff 0.1.1...
[INFO] testing bytebuff-0.1.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate bytebuff 0.1.1 into /workspace/builds/worker-103/source
[INFO] validating manifest of crates.io crate bytebuff 0.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bytebuff 0.1.1
[INFO] finished tweaking crates.io crate bytebuff 0.1.1
[INFO] tweaked toml for crates.io crate bytebuff 0.1.1 written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97871228b89976ece6ea42a8f969ed6cbf2d46d2c4be20f119551314322e097d
[INFO] running `Command { std: "docker" "start" "-a" "97871228b89976ece6ea42a8f969ed6cbf2d46d2c4be20f119551314322e097d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97871228b89976ece6ea42a8f969ed6cbf2d46d2c4be20f119551314322e097d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97871228b89976ece6ea42a8f969ed6cbf2d46d2c4be20f119551314322e097d", kill_on_drop: false }`
[INFO] [stdout] 97871228b89976ece6ea42a8f969ed6cbf2d46d2c4be20f119551314322e097d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5678f979968578d56b4c308e7564746a9ecc46429cfdd4fb05687821296998d
[INFO] running `Command { std: "docker" "start" "-a" "b5678f979968578d56b4c308e7564746a9ecc46429cfdd4fb05687821296998d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling marshall_derive v0.1.1
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/marshall_derive-0.1.1/src/lib.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::export::ToTokens;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_token_stream` found for enum `syn::Type` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/marshall_derive-0.1.1/src/lib.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 let ty = &field.ty.to_token_stream().to_string();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^ method not found in `syn::Type`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quote-1.0.9/src/to_tokens.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn to_token_stream(&self) -> TokenStream {
[INFO] [stdout]    |        --------------- the method is available for `syn::Type` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 4  | use syn::__private::ToTokens;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `marshall_derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b5678f979968578d56b4c308e7564746a9ecc46429cfdd4fb05687821296998d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5678f979968578d56b4c308e7564746a9ecc46429cfdd4fb05687821296998d", kill_on_drop: false }`
[INFO] [stdout] b5678f979968578d56b4c308e7564746a9ecc46429cfdd4fb05687821296998d
