[INFO] cloning repository https://github.com/mthadley/rclac
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mthadley/rclac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmthadley%2Frclac"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmthadley%2Frclac'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 55cb23dabd6261c2d0751b7921e496d1472a0117
[INFO] testing mthadley/rclac against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmthadley%2Frclac" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mthadley/rclac on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mthadley/rclac
[INFO] finished tweaking git repo https://github.com/mthadley/rclac
[INFO] tweaked toml for git repo https://github.com/mthadley/rclac written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mthadley/rclac already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/mthadley/rustyline`
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 43c3861a565baca4af427940806ad20d8213d26926f93a4dd0ff94c91f4d289f
[INFO] running `"docker" "start" "-a" "43c3861a565baca4af427940806ad20d8213d26926f93a4dd0ff94c91f4d289f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling rustyline v1.0.0 (https://github.com/mthadley/rustyline?branch=hints#3030e33e)
[INFO] [stderr] error[E0283]: type annotations needed
[INFO] [stderr]     --> /opt/rustwide/cargo-home/git/checkouts/rustyline-a6bb4f7dedbf15e5/3030e33/src/lib.rs:1185:49
[INFO] [stderr]      |
[INFO] [stderr] 1185 |                 self.editor.add_history_entry(l.as_ref()); // TODO Validate
[INFO] [stderr]      |                                               --^^^^^^--
[INFO] [stderr]      |                                               | |
[INFO] [stderr]      |                                               | cannot infer type for struct `std::string::String`
[INFO] [stderr]      |                                               this method call resolves to `&T`
[INFO] [stderr]      |
[INFO] [stderr]      = note: cannot satisfy `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations needed
[INFO] [stderr]    --> /opt/rustwide/cargo-home/git/checkouts/rustyline-a6bb4f7dedbf15e5/3030e33/src/history.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 132 |             self.add(try!(line).as_ref()); // TODO truncate to MAX_LINE
[INFO] [stderr]     |                      -----------^^^^^^--
[INFO] [stderr]     |                      |          |
[INFO] [stderr]     |                      |          cannot infer type for struct `std::string::String`
[INFO] [stderr]     |                      this method call resolves to `&T`
[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" "43c3861a565baca4af427940806ad20d8213d26926f93a4dd0ff94c91f4d289f"`
[INFO] running `"docker" "rm" "-f" "43c3861a565baca4af427940806ad20d8213d26926f93a4dd0ff94c91f4d289f"`
[INFO] [stdout] 43c3861a565baca4af427940806ad20d8213d26926f93a4dd0ff94c91f4d289f