[INFO] updating cached repository https://github.com/brettmcintosh/spellcheck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d3ca69bbe441a84e1b5bd828bed9afd658a4e4ff
[INFO] testing brettmcintosh/spellcheck against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrettmcintosh%2Fspellcheck" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brettmcintosh/spellcheck on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brettmcintosh/spellcheck
[INFO] finished tweaking git repo https://github.com/brettmcintosh/spellcheck
[INFO] tweaked toml for git repo https://github.com/brettmcintosh/spellcheck written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/brettmcintosh/spellcheck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a8fb0aa4ef271b662107a635f1e4bc550aac362d75cd3ad9d28b8c15d05f85c
[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" "8a8fb0aa4ef271b662107a635f1e4bc550aac362d75cd3ad9d28b8c15d05f85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a8fb0aa4ef271b662107a635f1e4bc550aac362d75cd3ad9d28b8c15d05f85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8fb0aa4ef271b662107a635f1e4bc550aac362d75cd3ad9d28b8c15d05f85c", kill_on_drop: false }`
[INFO] [stdout] 8a8fb0aa4ef271b662107a635f1e4bc550aac362d75cd3ad9d28b8c15d05f85c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afeb2fa579c2e229ee10ac31fa9cd7b5831826f563ec0f82ebb8f29f740deb7b
[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" "afeb2fa579c2e229ee10ac31fa9cd7b5831826f563ec0f82ebb8f29f740deb7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazy_static v0.2.10
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed for `std::vec::Vec<std::string::String>`
[INFO] [stdout]   --> src/data_structures.rs:51:48
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut words = Vec::new();
[INFO] [stdout]    |             --------- consider giving `words` the explicit type `std::vec::Vec<std::string::String>`, where the type parameter `std::string::String` is specified
[INFO] [stdout] ...
[INFO] [stdout] 51 |                         let mut child_prefix = String::from(prefix.as_ref());
[INFO] [stdout]    |                                                ^^^^^^^^^^^^ cannot infer type for struct `std::string::String`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `std::string::String: std::convert::From<&_>`
[INFO] [stdout]    = note: required by `std::convert::From::from`
[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 E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `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" "afeb2fa579c2e229ee10ac31fa9cd7b5831826f563ec0f82ebb8f29f740deb7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afeb2fa579c2e229ee10ac31fa9cd7b5831826f563ec0f82ebb8f29f740deb7b", kill_on_drop: false }`
[INFO] [stdout] afeb2fa579c2e229ee10ac31fa9cd7b5831826f563ec0f82ebb8f29f740deb7b