[INFO] updating cached repository https://github.com/Whazor/model_checker
[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] 06314d0de90dd54fbda0603da0745a240d37f07a
[INFO] checking Whazor/model_checker against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWhazor%2Fmodel_checker" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Whazor/model_checker on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Whazor/model_checker
[INFO] finished tweaking git repo https://github.com/Whazor/model_checker
[INFO] tweaked toml for git repo https://github.com/Whazor/model_checker written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Whazor/model_checker already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] 28dec690bba8be2a425909b50890e5a9ebbd3cb0f7f9862c0a9bf19fd6f99637
[INFO] running `"docker" "start" "-a" "28dec690bba8be2a425909b50890e5a9ebbd3cb0f7f9862c0a9bf19fd6f99637"`
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]     Checking bufstream v0.1.2
[INFO] [stderr]     Checking num-integer v0.1.33
[INFO] [stderr]     Checking num-complex v0.1.36
[INFO] [stderr]     Checking aho-corasick v0.6.2
[INFO] [stderr]     Checking boolean_expression v0.3.0
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking nix v0.7.0
[INFO] [stderr]     Checking num-bigint v0.1.37
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]    Compiling peg v0.5.1
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking num-rational v0.1.36
[INFO] [stderr]     Checking num v0.1.37
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking rustyline v1.0.0 (https://github.com/kkawakam/rustyline#ec773db5)
[INFO] [stderr]    Compiling peg-syntax-ext v0.5.0
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/peg-syntax-ext-0.5.0/lib.rs:1:30
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(plugin_registrar, quote, rustc_private, box_patterns)]
[INFO] [stderr]   |                              ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/peg-syntax-ext-0.5.0/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate rustc_plugin;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0463, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `peg-syntax-ext`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0283]: type annotations needed for `std::result::Result<std::string::String, error::ReadlineError>`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/git/checkouts/rustyline-98638c01accab86a/ec773db/src/lib.rs:1163:49
[INFO] [stderr]      |
[INFO] [stderr] 1160 |         let readline = self.editor.readline(self.prompt);
[INFO] [stderr]      |             -------- consider giving `readline` the explicit type `std::result::Result<std::string::String, error::ReadlineError>`, where the type parameter `std::string::String` is specified
[INFO] [stderr] ...
[INFO] [stderr] 1163 |                 self.editor.add_history_entry(l.as_ref()); // TODO Validate
[INFO] [stderr]      |                                                 ^^^^^^ cannot infer type for struct `std::string::String`
[INFO] [stderr]      |
[INFO] [stderr]      = note: cannot resolve `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/git/checkouts/rustyline-98638c01accab86a/ec773db/src/history.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 131 |         for line in rdr.lines() {
[INFO] [stderr]     |                     ----------- the element type for this iterator is not specified
[INFO] [stderr] 132 |             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 resolve `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] running `"docker" "inspect" "28dec690bba8be2a425909b50890e5a9ebbd3cb0f7f9862c0a9bf19fd6f99637"`
[INFO] running `"docker" "rm" "-f" "28dec690bba8be2a425909b50890e5a9ebbd3cb0f7f9862c0a9bf19fd6f99637"`
[INFO] [stdout] 28dec690bba8be2a425909b50890e5a9ebbd3cb0f7f9862c0a9bf19fd6f99637