[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] checking i80and/marian-rs against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi80and%2Fmarian-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/i80and/marian-rs on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "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-12/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" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest v0.7.2
[INFO] [stderr]   Downloaded walkdir v2.1.4
[INFO] [stderr]   Downloaded hyper v0.11.26
[INFO] [stderr]   Downloaded serde_derive v1.0.50
[INFO] [stderr]   Downloaded qp-trie v0.7.1
[INFO] [stderr]   Downloaded serde v1.0.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", 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] b4677919b48f34bb00bda60d8a3c286b94885b4c12c8c74039d3432b4def9daf
[INFO] running `Command { std: "docker" "start" "-a" "b4677919b48f34bb00bda60d8a3c286b94885b4c12c8c74039d3432b4def9daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4677919b48f34bb00bda60d8a3c286b94885b4c12c8c74039d3432b4def9daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4677919b48f34bb00bda60d8a3c286b94885b4c12c8c74039d3432b4def9daf", kill_on_drop: false }`
[INFO] [stdout] b4677919b48f34bb00bda60d8a3c286b94885b4c12c8c74039d3432b4def9daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0ed25bd56a63ae6de578afa8441bf5467d043d2fe2eb0f5defc5094047ec97b
[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" "f0ed25bd56a63ae6de578afa8441bf5467d043d2fe2eb0f5defc5094047ec97b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]     Checking serde v1.0.50
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking md5 v0.3.7
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking simple-logging v2.0.1
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking qp-trie v0.7.1
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking hmac v0.5.0
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f0ed25bd56a63ae6de578afa8441bf5467d043d2fe2eb0f5defc5094047ec97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0ed25bd56a63ae6de578afa8441bf5467d043d2fe2eb0f5defc5094047ec97b", kill_on_drop: false }`
[INFO] [stdout] f0ed25bd56a63ae6de578afa8441bf5467d043d2fe2eb0f5defc5094047ec97b