[INFO] cloning repository https://github.com/i80and/marian-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/i80and/marian-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi80and%2Fmarian-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi80and%2Fmarian-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c9ca328388902d35122b62cedeff984655c9bcd
[INFO] documenting i80and/marian-rs against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi80and%2Fmarian-rs" "/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/i80and/marian-rs on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/i80and/marian-rs
[INFO] finished tweaking git repo https://github.com/i80and/marian-rs
[INFO] tweaked toml for git repo https://github.com/i80and/marian-rs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/i80and/marian-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18a41ba4508c8145a21c822fba14aa5aa6e221dfd7115c77ecc2c7284971dd82
[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" "18a41ba4508c8145a21c822fba14aa5aa6e221dfd7115c77ecc2c7284971dd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18a41ba4508c8145a21c822fba14aa5aa6e221dfd7115c77ecc2c7284971dd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a41ba4508c8145a21c822fba14aa5aa6e221dfd7115c77ecc2c7284971dd82", kill_on_drop: false }`
[INFO] [stdout] 18a41ba4508c8145a21c822fba14aa5aa6e221dfd7115c77ecc2c7284971dd82
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a52468bc39031e3d5864e09777e84708befd23c9823e69152fd3631facd29ee1
[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" "a52468bc39031e3d5864e09777e84708befd23c9823e69152fd3631facd29ee1", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking serde v1.0.50
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking simple-logging v2.0.1
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]    Compiling rusoto_core v0.32.0
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking qp-trie v0.7.1
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/qp-trie-0.7.1/src/node.rs:502:41
[INFO] [stdout]     |
[INFO] [stdout] 479 |           &mut self,
[INFO] [stdout]     |           - let's call the lifetime of this reference `'1`
[INFO] [stdout] ...
[INFO] [stdout] 485 | /         match *self {
[INFO] [stdout] 486 | |             Node::Branch(ref mut branch) if branch.choice <= graft => {
[INFO] [stdout]     | |                          -------------- first mutable borrow occurs here
[INFO] [stdout] 487 | |                 let index = branch.index(key.borrow());
[INFO] [stdout] 488 | |
[INFO] [stdout] ...   |
[INFO] [stdout] 502 | |                 let node = mem::replace(self, Node::Branch(Branch::new(graft)));
[INFO] [stdout]     | |                                         ^^^^ second mutable borrow occurs here
[INFO] [stdout] ...   |
[INFO] [stdout] 517 | |             }
[INFO] [stdout] 518 | |         }
[INFO] [stdout]     | |_________- returning this value requires that `self.0` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/qp-trie-0.7.1/src/node.rs:505:45
[INFO] [stdout]     |
[INFO] [stdout] 479 |           &mut self,
[INFO] [stdout]     |           - let's call the lifetime of this reference `'1`
[INFO] [stdout] ...
[INFO] [stdout] 485 | /         match *self {
[INFO] [stdout] 486 | |             Node::Branch(ref mut branch) if branch.choice <= graft => {
[INFO] [stdout]     | |                          -------------- first mutable borrow occurs here
[INFO] [stdout] 487 | |                 let index = branch.index(key.borrow());
[INFO] [stdout] 488 | |
[INFO] [stdout] ...   |
[INFO] [stdout] 505 | |                 let graft_branch = unsafe { self.unwrap_branch_mut() };
[INFO] [stdout]     | |                                             ^^^^ second mutable borrow occurs here
[INFO] [stdout] ...   |
[INFO] [stdout] 517 | |             }
[INFO] [stdout] 518 | |         }
[INFO] [stdout]     | |_________- returning this value requires that `self.0` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qp-trie`.
[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] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stdout]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[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 E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a52468bc39031e3d5864e09777e84708befd23c9823e69152fd3631facd29ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a52468bc39031e3d5864e09777e84708befd23c9823e69152fd3631facd29ee1", kill_on_drop: false }`
[INFO] [stdout] a52468bc39031e3d5864e09777e84708befd23c9823e69152fd3631facd29ee1