[INFO] updating cached repository https://github.com/brettmcintosh/spellcheck
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3ca69bbe441a84e1b5bd828bed9afd658a4e4ff
[INFO] checking brettmcintosh/spellcheck against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrettmcintosh%2Fspellcheck" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brettmcintosh/spellcheck on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/brettmcintosh/spellcheck already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 157c049e9d7d5994564501e956b31a059a72ff6fa5808cf1a1b9079eb686c252
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "157c049e9d7d5994564501e956b31a059a72ff6fa5808cf1a1b9079eb686c252"`
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0283]: type annotations needed: cannot resolve `std::string::String: std::convert::From<&_>`
[INFO] [stderr]   --> src/data_structures.rs:51:48
[INFO] [stderr]    |
[INFO] [stderr] 51 |                         let mut child_prefix = String::from(prefix.as_ref());
[INFO] [stderr]    |                                                ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: required by `std::convert::From::from`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `trie`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0283]: type annotations needed: cannot resolve `std::string::String: std::convert::From<&_>`
[INFO] [stderr]   --> src/data_structures.rs:51:48
[INFO] [stderr]    |
[INFO] [stderr] 51 |                         let mut child_prefix = String::from(prefix.as_ref());
[INFO] [stderr]    |                                                ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: required by `std::convert::From::from`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `trie`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "157c049e9d7d5994564501e956b31a059a72ff6fa5808cf1a1b9079eb686c252"`
[INFO] running `"docker" "rm" "-f" "157c049e9d7d5994564501e956b31a059a72ff6fa5808cf1a1b9079eb686c252"`
[INFO] [stdout] 157c049e9d7d5994564501e956b31a059a72ff6fa5808cf1a1b9079eb686c252