[INFO] cloning repository https://github.com/jD91mZM2/generic-turing-machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jD91mZM2/generic-turing-machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjD91mZM2%2Fgeneric-turing-machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjD91mZM2%2Fgeneric-turing-machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad9ac7b01821364c0b3be26b5393463fff312f63
[INFO] checking jD91mZM2/generic-turing-machine against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjD91mZM2%2Fgeneric-turing-machine" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jD91mZM2/generic-turing-machine on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jD91mZM2/generic-turing-machine
[INFO] finished tweaking git repo https://github.com/jD91mZM2/generic-turing-machine
[INFO] tweaked toml for git repo https://github.com/jD91mZM2/generic-turing-machine written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jD91mZM2/generic-turing-machine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustyline v2.1.0
[INFO] [stderr]   Downloaded syn v0.15.16
[INFO] [stderr]   Downloaded smol_str v0.1.7
[INFO] [stderr]   Downloaded rowan v0.1.1
[INFO] [stderr]   Downloaded text_unit v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7044c8e6f58bc0fa5e4b7eee057ed1e4eb3eb22c4efa41807e84bac649bb1c0e
[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" "7044c8e6f58bc0fa5e4b7eee057ed1e4eb3eb22c4efa41807e84bac649bb1c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7044c8e6f58bc0fa5e4b7eee057ed1e4eb3eb22c4efa41807e84bac649bb1c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7044c8e6f58bc0fa5e4b7eee057ed1e4eb3eb22c4efa41807e84bac649bb1c0e", kill_on_drop: false }`
[INFO] [stdout] 7044c8e6f58bc0fa5e4b7eee057ed1e4eb3eb22c4efa41807e84bac649bb1c0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 491b2fb2b5685d35e585d21dfaa3bc9e069745af79ad4e8dde79f907c329ae17
[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" "491b2fb2b5685d35e585d21dfaa3bc9e069745af79ad4e8dde79f907c329ae17", kill_on_drop: false }`
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking text_unit v0.1.5
[INFO] [stderr]     Checking smol_str v0.1.7
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]    Compiling syn v0.15.16
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking rowan v0.1.1
[INFO] [stderr]     Checking rustyline v2.1.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-2.1.0/src/lib.rs:639:43
[INFO] [stdout]     |
[INFO] [stdout] 639 |             editor.add_history_entry(line.as_ref());
[INFO] [stdout]     |                                      -----^^^^^^--
[INFO] [stdout]     |                                      |    |
[INFO] [stdout]     |                                      |    cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |                                      this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-2.1.0/src/history.rs:150:33
[INFO] [stdout]     |
[INFO] [stdout] 150 |             self.add(try!(line).as_ref()); // TODO truncate to MAX_LINE
[INFO] [stdout]     |                      -----------^^^^^^--
[INFO] [stdout]     |                      |          |
[INFO] [stdout]     |                      |          cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |                      this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "491b2fb2b5685d35e585d21dfaa3bc9e069745af79ad4e8dde79f907c329ae17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "491b2fb2b5685d35e585d21dfaa3bc9e069745af79ad4e8dde79f907c329ae17", kill_on_drop: false }`
[INFO] [stdout] 491b2fb2b5685d35e585d21dfaa3bc9e069745af79ad4e8dde79f907c329ae17