[INFO] crate muta-protocol 0.1.0-alpha.1 is already in cache
[INFO] testing muta-protocol-0.1.0-alpha.1 against try#5bc97a20e5cc382ae6d19f727a9e73eeb2734548 for pr-99093
[INFO] extracting crate muta-protocol 0.1.0-alpha.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate muta-protocol 0.1.0-alpha.1 on toolchain 5bc97a20e5cc382ae6d19f727a9e73eeb2734548
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5bc97a20e5cc382ae6d19f727a9e73eeb2734548" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate muta-protocol 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate muta-protocol 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate muta-protocol 0.1.0-alpha.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5bc97a20e5cc382ae6d19f727a9e73eeb2734548" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5bc97a20e5cc382ae6d19f727a9e73eeb2734548" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+5bc97a20e5cc382ae6d19f727a9e73eeb2734548" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c236df7f2447aa925aaf3d526d00c3b678c123188944ecc8eaaf879e953530b
[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" "1c236df7f2447aa925aaf3d526d00c3b678c123188944ecc8eaaf879e953530b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c236df7f2447aa925aaf3d526d00c3b678c123188944ecc8eaaf879e953530b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c236df7f2447aa925aaf3d526d00c3b678c123188944ecc8eaaf879e953530b", kill_on_drop: false }`
[INFO] [stdout] 1c236df7f2447aa925aaf3d526d00c3b678c123188944ecc8eaaf879e953530b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+5bc97a20e5cc382ae6d19f727a9e73eeb2734548" "build" "--frozen" "--message-format=json", 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] 461bb8ba38d307da26f28d9ed2c247460cb509ed8ca3adbe9a527a586b16be14
[INFO] running `Command { std: "docker" "start" "-a" "461bb8ba38d307da26f28d9ed2c247460cb509ed8ca3adbe9a527a586b16be14", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling either v1.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling hashbrown v0.3.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling creep v0.1.1
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling rlp v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling impl-rlp v0.2.1
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling uint v0.4.1
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling hasher v0.1.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling fixed-hash v0.2.5
[INFO] [stderr]    Compiling fixed-hash v0.5.2
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prost-derive-0.6.1/src/lib.rs:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 |             .intersperse(quote!(|));
[INFO] [stdout]     |              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Iterator` for the type `Map<I, F>`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 107 ~         let tags = Itertools::intersperse(field
[INFO] [stdout] 108 +             .tags()
[INFO] [stdout] 109 +             .into_iter()
[INFO] [stdout] 110 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 111 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 112 +         $crate::quote_token!{$tt _s}
[INFO] [stdout] 113 +         _s
[INFO] [stdout] 114 ~     });
[INFO] [stdout]     |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 107 ~         let tags = Iterator::intersperse(field
[INFO] [stdout] 108 +             .tags()
[INFO] [stdout] 109 +             .into_iter()
[INFO] [stdout] 110 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 111 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 112 +         $crate::quote_token!{$tt _s}
[INFO] [stdout] 113 +         _s
[INFO] [stdout] 114 ~     });
[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] running `Command { std: "docker" "inspect" "461bb8ba38d307da26f28d9ed2c247460cb509ed8ca3adbe9a527a586b16be14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "461bb8ba38d307da26f28d9ed2c247460cb509ed8ca3adbe9a527a586b16be14", kill_on_drop: false }`
[INFO] [stdout] 461bb8ba38d307da26f28d9ed2c247460cb509ed8ca3adbe9a527a586b16be14