[INFO] cloning repository https://github.com/jeanm/mkweb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeanm/mkweb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeanm%2Fmkweb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeanm%2Fmkweb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11d43b5592427dff030e61e1c73bdbe81beb21a5
[INFO] testing jeanm/mkweb against beta-2021-09-12 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeanm%2Fmkweb" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeanm/mkweb on toolchain beta-2021-09-12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeanm/mkweb
[INFO] finished tweaking git repo https://github.com/jeanm/mkweb
[INFO] tweaked toml for git repo https://github.com/jeanm/mkweb written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jeanm/mkweb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2021-09-12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d08860bd2927cea1b92ff2ba0d94a8a35c3077ab80281f2015ed45ae5d7742bb
[INFO] running `Command { std: "docker" "start" "-a" "d08860bd2927cea1b92ff2ba0d94a8a35c3077ab80281f2015ed45ae5d7742bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d08860bd2927cea1b92ff2ba0d94a8a35c3077ab80281f2015ed45ae5d7742bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08860bd2927cea1b92ff2ba0d94a8a35c3077ab80281f2015ed45ae5d7742bb", kill_on_drop: false }`
[INFO] [stdout] d08860bd2927cea1b92ff2ba0d94a8a35c3077ab80281f2015ed45ae5d7742bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2021-09-12" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecce07a7eb25396975e8b07f51d6cecc46645928763542193d9e17cc00714e5
[INFO] running `Command { std: "docker" "start" "-a" "4ecce07a7eb25396975e8b07f51d6cecc46645928763542193d9e17cc00714e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling same-file v0.1.2
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling aho-corasick v0.6.1
[INFO] [stderr]    Compiling thread_local v0.3.2
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling pandoc v0.5.1
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pandoc-0.5.1/src/lib.rs:912:14
[INFO] [stdout]     |
[INFO] [stdout] 912 |             .intersperse(";")
[INFO] [stdout]     |              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::iter::Chain<A, B>`
[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] 906 ~         let path: String = Iterator::intersperse(self.latex_path_hint.iter()
[INFO] [stdout] 907 +             .chain(self.pandoc_path_hint.iter())
[INFO] [stdout] 908 +             .map(|p| p.to_str().expect("non-utf8 path"))
[INFO] [stdout] 909 +             .chain(PANDOC_PATH.into_iter().cloned())
[INFO] [stdout] 910 +             .chain(LATEX_PATH.into_iter().cloned())
[INFO] [stdout] 911 +             .chain([env::var("PATH").unwrap()].iter().map(std::borrow::Borrow::borrow)), ";")
[INFO] [stdout]     |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 906 ~         let path: String = Itertools::intersperse(self.latex_path_hint.iter()
[INFO] [stdout] 907 +             .chain(self.pandoc_path_hint.iter())
[INFO] [stdout] 908 +             .map(|p| p.to_str().expect("non-utf8 path"))
[INFO] [stdout] 909 +             .chain(PANDOC_PATH.into_iter().cloned())
[INFO] [stdout] 910 +             .chain(LATEX_PATH.into_iter().cloned())
[INFO] [stdout] 911 +             .chain([env::var("PATH").unwrap()].iter().map(std::borrow::Borrow::borrow)), ";")
[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 `pandoc` 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" "4ecce07a7eb25396975e8b07f51d6cecc46645928763542193d9e17cc00714e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecce07a7eb25396975e8b07f51d6cecc46645928763542193d9e17cc00714e5", kill_on_drop: false }`
[INFO] [stdout] 4ecce07a7eb25396975e8b07f51d6cecc46645928763542193d9e17cc00714e5