[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 master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakemr%2Flearningrust_multiws" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blakemr/learningrust_multiws on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "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-0-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e3b6d2c30748c5be56b5a94e81e4d533168942e54f97811b7d4d415aa40bf15
[INFO] running `Command { std: "docker" "start" "-a" "2e3b6d2c30748c5be56b5a94e81e4d533168942e54f97811b7d4d415aa40bf15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e3b6d2c30748c5be56b5a94e81e4d533168942e54f97811b7d4d415aa40bf15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3b6d2c30748c5be56b5a94e81e4d533168942e54f97811b7d4d415aa40bf15", kill_on_drop: false }`
[INFO] [stdout] 2e3b6d2c30748c5be56b5a94e81e4d533168942e54f97811b7d4d415aa40bf15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0c18efc94fe4ad0d0f03076b38cdad85817cfb6132a9c3fe28c2c148b1c4b92
[INFO] running `Command { std: "docker" "start" "-a" "b0c18efc94fe4ad0d0f03076b38cdad85817cfb6132a9c3fe28c2c148b1c4b92", 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] 11 | trait FnBox {
[INFO] [stdout]    |       ----- `Self` not allowed in a trait
[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] 15 | impl<F: FnOnce()> FnBox for F {
[INFO] [stdout]    |      - found this type parameter
[INFO] [stdout] 16 |     fn call_box(self: Box<dyn F>) {
[INFO] [stdout]    |                               ^ help: a trait with a similar name exists: `Fn`
[INFO] [stdout]   --> /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/ops/function.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Fn` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0411]: expected trait, found self type `Self`
[INFO] [stdout]   --> src/lib.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait FnBox {
[INFO] [stdout]    |       ----- `Self` not allowed in a trait
[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] 15 | impl<F: FnOnce()> FnBox for F {
[INFO] [stdout]    |      - found this type parameter
[INFO] [stdout] 16 |     fn call_box(self: Box<dyn F>) {
[INFO] [stdout]    |                               ^ help: a trait with a similar name exists: `Fn`
[INFO] [stdout]   --> /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/ops/function.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Fn` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_server` (lib) due to 3 previous errors
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0404, E0411.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_server` (lib test) due to 3 previous errors
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[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] running `Command { std: "docker" "inspect" "b0c18efc94fe4ad0d0f03076b38cdad85817cfb6132a9c3fe28c2c148b1c4b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0c18efc94fe4ad0d0f03076b38cdad85817cfb6132a9c3fe28c2c148b1c4b92", kill_on_drop: false }`
[INFO] [stdout] b0c18efc94fe4ad0d0f03076b38cdad85817cfb6132a9c3fe28c2c148b1c4b92