[INFO] updating cached repository https://github.com/kapstok/Ambassade
[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] 693aeb50c53b4ff2d77147f071934d9313f7c6dc
[INFO] checking kapstok/Ambassade against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkapstok%2FAmbassade" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kapstok/Ambassade on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kapstok/Ambassade
[INFO] finished tweaking git repo https://github.com/kapstok/Ambassade
[INFO] tweaked toml for git repo https://github.com/kapstok/Ambassade written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kapstok/Ambassade already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] da999e19d15db260d896156836fc72422e41a2b13f8023af930b2eaec9567086
[INFO] running `"docker" "start" "-a" "da999e19d15db260d896156836fc72422e41a2b13f8023af930b2eaec9567086"`
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling curl-sys v0.4.16
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking memchr v2.1.3
[INFO] [stderr]     Checking serde_json v1.0.36
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]     Checking rustyline v2.1.0
[INFO] [stderr] error[E0283]: type annotations needed for `std::result::Result<std::string::String, error::ReadlineError>`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-2.1.0/src/lib.rs:639:43
[INFO] [stderr]     |
[INFO] [stderr] 636 |     let user_input = readline_edit(prompt, initial, editor, &original_mode);
[INFO] [stderr]     |         ---------- consider giving `user_input` the explicit type `std::result::Result<std::string::String, error::ReadlineError>`, where the type parameter `std::string::String` is specified
[INFO] [stderr] ...
[INFO] [stderr] 639 |             editor.add_history_entry(line.as_ref());
[INFO] [stderr]     |                                           ^^^^^^ cannot infer type for struct `std::string::String`
[INFO] [stderr]     |
[INFO] [stderr]     = note: cannot satisfy `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations needed for `std::result::Result<std::string::String, std::io::Error>`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-2.1.0/src/history.rs:150:33
[INFO] [stderr]     |
[INFO] [stderr] 149 |         for line in rdr.lines() {
[INFO] [stderr]     |                     ----------- the element type for this iterator is not specified
[INFO] [stderr] 150 |             self.add(try!(line).as_ref()); // TODO truncate to MAX_LINE
[INFO] [stderr]     |                                 ^^^^^^ cannot infer type for struct `std::string::String`
[INFO] [stderr]     |
[INFO] [stderr]     = note: cannot satisfy `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `rustyline`.
[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 `"docker" "inspect" "da999e19d15db260d896156836fc72422e41a2b13f8023af930b2eaec9567086"`
[INFO] running `"docker" "rm" "-f" "da999e19d15db260d896156836fc72422e41a2b13f8023af930b2eaec9567086"`
[INFO] [stdout] da999e19d15db260d896156836fc72422e41a2b13f8023af930b2eaec9567086
