[INFO] cloning repository https://github.com/blakemr/learningrust_multiws
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blakemr/learningrust_multiws" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakemr%2Flearningrust_multiws", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakemr%2Flearningrust_multiws'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2b9b7b9b4948467c8389060230b4686a85d9c1e
[INFO] checking blakemr/learningrust_multiws against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakemr%2Flearningrust_multiws" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blakemr/learningrust_multiws on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blakemr/learningrust_multiws
[INFO] finished tweaking git repo https://github.com/blakemr/learningrust_multiws
[INFO] tweaked toml for git repo https://github.com/blakemr/learningrust_multiws written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/blakemr/learningrust_multiws already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 38872ce13980741531e8206c2d832c8a573a804372accf65a1c6edf4bda563dc
[INFO] running `Command { std: "docker" "start" "-a" "38872ce13980741531e8206c2d832c8a573a804372accf65a1c6edf4bda563dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38872ce13980741531e8206c2d832c8a573a804372accf65a1c6edf4bda563dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38872ce13980741531e8206c2d832c8a573a804372accf65a1c6edf4bda563dc", kill_on_drop: false }`
[INFO] [stdout] 38872ce13980741531e8206c2d832c8a573a804372accf65a1c6edf4bda563dc
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4180d32ef601a941722c52be0e1164fce10d080be22750d8663bea907348b3c
[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" "f4180d32ef601a941722c52be0e1164fce10d080be22750d8663bea907348b3c", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0411]: expected trait, found self type `Self`
[INFO] [stdout]   --> src/lib.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn call_box(self: Box<dyn Self>);
[INFO] [stdout]    |                               ^^^^ `Self` is only available in impls, traits, and type definitions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0404]: expected trait, found type parameter `F`
[INFO] [stdout]   --> src/lib.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 |       fn call_box(self: Box<dyn F>) {
[INFO] [stdout]    |                                 ^ help: a trait with a similar name exists: `Fn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0404, E0411.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_server`
[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] [stdout] error[E0411]: expected trait, found self type `Self`
[INFO] [stdout]   --> src/lib.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn call_box(self: Box<dyn Self>);
[INFO] [stdout]    |                               ^^^^ `Self` is only available in impls, traits, and type definitions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0404]: expected trait, found type parameter `F`
[INFO] [stdout]   --> src/lib.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 |       fn call_box(self: Box<dyn F>) {
[INFO] [stdout]    |                                 ^ help: a trait with a similar name exists: `Fn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0404, E0411.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f4180d32ef601a941722c52be0e1164fce10d080be22750d8663bea907348b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4180d32ef601a941722c52be0e1164fce10d080be22750d8663bea907348b3c", kill_on_drop: false }`
[INFO] [stdout] f4180d32ef601a941722c52be0e1164fce10d080be22750d8663bea907348b3c