[INFO] fetching crate bystr-impl 0.1.3...
[INFO] testing bystr-impl-0.1.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate bystr-impl 0.1.3 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate bystr-impl 0.1.3 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 bystr-impl 0.1.3
[INFO] finished tweaking crates.io crate bystr-impl 0.1.3
[INFO] tweaked toml for crates.io crate bystr-impl 0.1.3 written to /workspace/builds/worker-20/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 11c98649ded35d0839d74fb4446341e05b2f72d540d21d2536a7c33cedaa5eaf
[INFO] running `Command { std: "docker" "start" "-a" "11c98649ded35d0839d74fb4446341e05b2f72d540d21d2536a7c33cedaa5eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11c98649ded35d0839d74fb4446341e05b2f72d540d21d2536a7c33cedaa5eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11c98649ded35d0839d74fb4446341e05b2f72d540d21d2536a7c33cedaa5eaf", kill_on_drop: false }`
[INFO] [stdout] 11c98649ded35d0839d74fb4446341e05b2f72d540d21d2536a7c33cedaa5eaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 61634798539f942e897c37be4298565ed850acfd62fafbcde496ac99982bcdec
[INFO] running `Command { std: "docker" "start" "-a" "61634798539f942e897c37be4298565ed850acfd62fafbcde496ac99982bcdec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bystr-impl v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> src/lib.rs:15:83
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn stringify(input: &syn::parse::ParseStream) -> syn::parse::Result<(String, syn::export::Span)> {
[INFO] [stdout]    |                                                                                   ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> src/lib.rs:30:16
[INFO] [stdout]    |
[INFO] [stdout] 30 |     span: syn::export::Span,
[INFO] [stdout]    |                ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> src/lib.rs:35:42
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut len: Option<(usize, syn::export::Span)> = None;
[INFO] [stdout]    |                                          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> src/lib.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn byte_to_expr(b: u8, span: syn::export::Span) -> syn::Expr {
[INFO] [stdout]    |                                   ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bystr-impl`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "61634798539f942e897c37be4298565ed850acfd62fafbcde496ac99982bcdec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61634798539f942e897c37be4298565ed850acfd62fafbcde496ac99982bcdec", kill_on_drop: false }`
[INFO] [stdout] 61634798539f942e897c37be4298565ed850acfd62fafbcde496ac99982bcdec
