[INFO] cloning repository https://github.com/Gregory-Meyer/secret-santa
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gregory-Meyer/secret-santa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregory-Meyer%2Fsecret-santa", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregory-Meyer%2Fsecret-santa'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa0b51d4b8244af595b2584d727201443563825c
[INFO] documenting Gregory-Meyer/secret-santa against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregory-Meyer%2Fsecret-santa" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gregory-Meyer/secret-santa on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gregory-Meyer/secret-santa
[INFO] finished tweaking git repo https://github.com/Gregory-Meyer/secret-santa
[INFO] tweaked toml for git repo https://github.com/Gregory-Meyer/secret-santa written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Gregory-Meyer/secret-santa already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lettre_email v0.7.0
[INFO] [stderr]   Downloaded hex v0.2.0
[INFO] [stderr]   Downloaded lettre v0.7.0
[INFO] [stderr]   Downloaded openssl v0.9.22
[INFO] [stderr]   Downloaded serde_derive v1.0.23
[INFO] [stderr]   Downloaded openssl-sys v0.9.22
[INFO] [stderr]   Downloaded email v0.0.18
[INFO] [stderr]   Downloaded base64 v0.7.0
[INFO] [stderr]   Downloaded bufstream v0.1.3
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded serde v1.0.23
[INFO] [stderr]   Downloaded fixedbitset v0.1.8
[INFO] [stderr]   Downloaded schannel v0.1.8
[INFO] [stderr]   Downloaded ordermap v0.3.2
[INFO] [stderr]   Downloaded serde_derive_internals v0.17.0
[INFO] [stderr]   Downloaded serde_json v1.0.7
[INFO] [stderr]   Downloaded petgraph v0.4.10
[INFO] [stderr]   Downloaded rand v0.3.18
[INFO] [stderr]   Downloaded clap v2.28.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76e07133285380bc6e633e4814e2d5d42934a35b8480b9752a3c977c5b825c79
[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" "76e07133285380bc6e633e4814e2d5d42934a35b8480b9752a3c977c5b825c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76e07133285380bc6e633e4814e2d5d42934a35b8480b9752a3c977c5b825c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76e07133285380bc6e633e4814e2d5d42934a35b8480b9752a3c977c5b825c79", kill_on_drop: false }`
[INFO] [stdout] 76e07133285380bc6e633e4814e2d5d42934a35b8480b9752a3c977c5b825c79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] edec3cd231458a596da325a7f137a5a65af59f5f43d9f38305bdf9df59d9a92a
[INFO] running `Command { std: "docker" "start" "-a" "edec3cd231458a596da325a7f137a5a65af59f5f43d9f38305bdf9df59d9a92a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling openssl v0.9.22
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking serde v1.0.23
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking fixedbitset v0.1.8
[INFO] [stderr]     Checking ordermap v0.3.2
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling email v0.0.18
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]     Checking base64 v0.7.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking petgraph v0.4.10
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking mime v0.3.5
[INFO] [stderr]     Checking clap v2.28.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling openssl-sys v0.9.22
[INFO] [stderr]    Compiling serde_derive v1.0.23
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/graph_impl/stable_graph/mod.rs:1173:19
[INFO] [stdout]      |
[INFO] [stdout] 1173 |         self.iter.find_map(|(i, node)| {
[INFO] [stdout]      |                   ^^^^^^^^ multiple `find_map` found
[INFO] [stdout]      |
[INFO] [stdout] note: candidate #1 is defined in an impl of the trait `iter_utils::IterUtilsExt` for the type `I`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/iter_utils.rs:5:5
[INFO] [stdout]      |
[INFO] [stdout] 5    | /     fn find_map<F, R>(&mut self, mut f: F) -> Option<R>
[INFO] [stdout] 6    | |         where F: FnMut(Self::Item) -> Option<R>
[INFO] [stdout]      | |_______________________________________________^
[INFO] [stdout]      = note: candidate #2 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::Enumerate<I>`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]      |
[INFO] [stdout] 1173 |         iter_utils::IterUtilsExt::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1174 |             node.weight.as_ref().map(move |w| (node_index(i), w))
[INFO] [stdout] 1175 |         })
[INFO] [stdout]      |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]      |
[INFO] [stdout] 1173 |         std::iter::Iterator::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1174 |             node.weight.as_ref().map(move |w| (node_index(i), w))
[INFO] [stdout] 1175 |         })
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/graph_impl/stable_graph/mod.rs:1365:19
[INFO] [stdout]      |
[INFO] [stdout] 1365 |         self.iter.find_map(|(i, edge)|
[INFO] [stdout]      |                   ^^^^^^^^ multiple `find_map` found
[INFO] [stdout]      |
[INFO] [stdout] note: candidate #1 is defined in an impl of the trait `iter_utils::IterUtilsExt` for the type `I`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/iter_utils.rs:5:5
[INFO] [stdout]      |
[INFO] [stdout] 5    | /     fn find_map<F, R>(&mut self, mut f: F) -> Option<R>
[INFO] [stdout] 6    | |         where F: FnMut(Self::Item) -> Option<R>
[INFO] [stdout]      | |_______________________________________________^
[INFO] [stdout]      = note: candidate #2 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::Enumerate<I>`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]      |
[INFO] [stdout] 1365 |         iter_utils::IterUtilsExt::find_map(&mut self.iter, |(i, edge)|
[INFO] [stdout] 1366 |             edge.weight.as_ref().map(move |weight| {
[INFO] [stdout] 1367 |                 EdgeReference {
[INFO] [stdout] 1368 |                     index: edge_index(i),
[INFO] [stdout] 1369 |                     node: edge.node,
[INFO] [stdout] 1370 |                     weight: weight,
[INFO] [stdout]    ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]      |
[INFO] [stdout] 1365 |         std::iter::Iterator::find_map(&mut self.iter, |(i, edge)|
[INFO] [stdout] 1366 |             edge.weight.as_ref().map(move |weight| {
[INFO] [stdout] 1367 |                 EdgeReference {
[INFO] [stdout] 1368 |                     index: edge_index(i),
[INFO] [stdout] 1369 |                     node: edge.node,
[INFO] [stdout] 1370 |                     weight: weight,
[INFO] [stdout]    ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/graph_impl/stable_graph/mod.rs:1529:19
[INFO] [stdout]      |
[INFO] [stdout] 1529 |         self.iter.find_map(|(i, node)| {
[INFO] [stdout]      |                   ^^^^^^^^ multiple `find_map` found
[INFO] [stdout]      |
[INFO] [stdout] note: candidate #1 is defined in an impl of the trait `iter_utils::IterUtilsExt` for the type `I`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/iter_utils.rs:5:5
[INFO] [stdout]      |
[INFO] [stdout] 5    | /     fn find_map<F, R>(&mut self, mut f: F) -> Option<R>
[INFO] [stdout] 6    | |         where F: FnMut(Self::Item) -> Option<R>
[INFO] [stdout]      | |_______________________________________________^
[INFO] [stdout]      = note: candidate #2 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::Enumerate<I>`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]      |
[INFO] [stdout] 1529 |         iter_utils::IterUtilsExt::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1530 |             if node.weight.is_some() {
[INFO] [stdout] 1531 |                 Some(node_index(i))
[INFO] [stdout] 1532 |             } else { None }
[INFO] [stdout] 1533 |         })
[INFO] [stdout]      |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]      |
[INFO] [stdout] 1529 |         std::iter::Iterator::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1530 |             if node.weight.is_some() {
[INFO] [stdout] 1531 |                 Some(node_index(i))
[INFO] [stdout] 1532 |             } else { None }
[INFO] [stdout] 1533 |         })
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/graph_impl/stable_graph/mod.rs:1575:19
[INFO] [stdout]      |
[INFO] [stdout] 1575 |         self.iter.find_map(|(i, node)| {
[INFO] [stdout]      |                   ^^^^^^^^ multiple `find_map` found
[INFO] [stdout]      |
[INFO] [stdout] note: candidate #1 is defined in an impl of the trait `iter_utils::IterUtilsExt` for the type `I`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.4.10/src/iter_utils.rs:5:5
[INFO] [stdout]      |
[INFO] [stdout] 5    | /     fn find_map<F, R>(&mut self, mut f: F) -> Option<R>
[INFO] [stdout] 6    | |         where F: FnMut(Self::Item) -> Option<R>
[INFO] [stdout]      | |_______________________________________________^
[INFO] [stdout]      = note: candidate #2 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::Enumerate<I>`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]      |
[INFO] [stdout] 1575 |         iter_utils::IterUtilsExt::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1576 |             if node.weight.is_some() {
[INFO] [stdout] 1577 |                 Some(edge_index(i))
[INFO] [stdout] 1578 |             } else { None }
[INFO] [stdout] 1579 |         })
[INFO] [stdout]      |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]      |
[INFO] [stdout] 1575 |         std::iter::Iterator::find_map(&mut self.iter, |(i, node)| {
[INFO] [stdout] 1576 |             if node.weight.is_some() {
[INFO] [stdout] 1577 |                 Some(edge_index(i))
[INFO] [stdout] 1578 |             } else { None }
[INFO] [stdout] 1579 |         })
[INFO] [stdout]      |
[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 E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `petgraph`.
[INFO] [stderr] 
[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" "edec3cd231458a596da325a7f137a5a65af59f5f43d9f38305bdf9df59d9a92a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edec3cd231458a596da325a7f137a5a65af59f5f43d9f38305bdf9df59d9a92a", kill_on_drop: false }`
[INFO] [stdout] edec3cd231458a596da325a7f137a5a65af59f5f43d9f38305bdf9df59d9a92a