[INFO] fetching crate bystr-impl 0.1.3...
[INFO] checking bystr-impl-0.1.3 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate bystr-impl 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bystr-impl 0.1.3 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 53be68779ba3cc8205b45e8f5d920aaafba0318d172e3d6d09de309e629ffb0c
[INFO] running `Command { std: "docker" "start" "-a" "53be68779ba3cc8205b45e8f5d920aaafba0318d172e3d6d09de309e629ffb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53be68779ba3cc8205b45e8f5d920aaafba0318d172e3d6d09de309e629ffb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53be68779ba3cc8205b45e8f5d920aaafba0318d172e3d6d09de309e629ffb0c", kill_on_drop: false }`
[INFO] [stdout] 53be68779ba3cc8205b45e8f5d920aaafba0318d172e3d6d09de309e629ffb0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 253181fc60a61d18798c7901b0eb929a9b25114b2ccf9cd7719cd30a6febb680
[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" "253181fc60a61d18798c7901b0eb929a9b25114b2ccf9cd7719cd30a6febb680", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking 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[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] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bystr-impl`
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "253181fc60a61d18798c7901b0eb929a9b25114b2ccf9cd7719cd30a6febb680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "253181fc60a61d18798c7901b0eb929a9b25114b2ccf9cd7719cd30a6febb680", kill_on_drop: false }`
[INFO] [stdout] 253181fc60a61d18798c7901b0eb929a9b25114b2ccf9cd7719cd30a6febb680