[INFO] fetching crate prost-codegen 0.1.0...
[INFO] testing prost-codegen-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate prost-codegen 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate prost-codegen 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prost-codegen 0.1.0
[INFO] finished tweaking crates.io crate prost-codegen 0.1.0
[INFO] tweaked toml for crates.io crate prost-codegen 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prost-derive v0.1.0
[INFO] [stderr]   Downloaded multimap v0.3.0
[INFO] [stderr]   Downloaded prost v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b309af6c638fad0145558bb3f97648fc675980dbfa87405e3b49cc0a9919d8b8
[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" "b309af6c638fad0145558bb3f97648fc675980dbfa87405e3b49cc0a9919d8b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b309af6c638fad0145558bb3f97648fc675980dbfa87405e3b49cc0a9919d8b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b309af6c638fad0145558bb3f97648fc675980dbfa87405e3b49cc0a9919d8b8", kill_on_drop: false }`
[INFO] [stdout] b309af6c638fad0145558bb3f97648fc675980dbfa87405e3b49cc0a9919d8b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dd8d54e193640f33b12d8234944a22115bc618f37eb14bf9db3d875d6cf4405
[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" "3dd8d54e193640f33b12d8234944a22115bc618f37eb14bf9db3d875d6cf4405", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling multimap v0.3.0
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling prost v0.1.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling prost-derive v0.1.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prost-derive-0.1.0/src/prost-derive.rs:89:69
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let tags = field.tags().into_iter().map(|tag| quote!(#tag)).intersperse(quote!(|));
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]    |
[INFO] [stdout]    = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `Map<I, F>`
[INFO] [stdout]    = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]    |
[INFO] [stdout] 89 ~         let tags = Iterator::intersperse(field.tags().into_iter().map(|tag| quote!(#tag)), {
[INFO] [stdout] 90 +             let mut _s = $crate::Tokens::new();
[INFO] [stdout] 91 +             quote_each_token!(_s $($tt)*);
[INFO] [stdout] 92 +             _s
[INFO] [stdout] 93 ~         });
[INFO] [stdout]    |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]    |
[INFO] [stdout] 89 ~         let tags = Itertools::intersperse(field.tags().into_iter().map(|tag| quote!(#tag)), {
[INFO] [stdout] 90 +             let mut _s = $crate::Tokens::new();
[INFO] [stdout] 91 +             quote_each_token!(_s $($tt)*);
[INFO] [stdout] 92 +             _s
[INFO] [stdout] 93 ~         });
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prost-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" "3dd8d54e193640f33b12d8234944a22115bc618f37eb14bf9db3d875d6cf4405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd8d54e193640f33b12d8234944a22115bc618f37eb14bf9db3d875d6cf4405", kill_on_drop: false }`
[INFO] [stdout] 3dd8d54e193640f33b12d8234944a22115bc618f37eb14bf9db3d875d6cf4405