[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/d2b9b7b9b4948467c8389060230b4686a85d9c1e against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[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 ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca8ce53097056dfaad2b7ba7e2e43c76985e873e6bb3679c86d7d162ccbe3b18
[INFO] running `Command { std: "docker" "start" "-a" "ca8ce53097056dfaad2b7ba7e2e43c76985e873e6bb3679c86d7d162ccbe3b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca8ce53097056dfaad2b7ba7e2e43c76985e873e6bb3679c86d7d162ccbe3b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca8ce53097056dfaad2b7ba7e2e43c76985e873e6bb3679c86d7d162ccbe3b18", kill_on_drop: false }`
[INFO] [stdout] ca8ce53097056dfaad2b7ba7e2e43c76985e873e6bb3679c86d7d162ccbe3b18
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0d4eced8e686c71bae5870f0e33e780952fbfc255d2f56173cfc30b4ea7d92e
[INFO] running `Command { std: "docker" "start" "-a" "e0d4eced8e686c71bae5870f0e33e780952fbfc255d2f56173cfc30b4ea7d92e", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[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/ff1737bb00913444173658b4e0b274fd79aabf66/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/ff1737bb00913444173658b4e0b274fd79aabf66/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] Some errors have detailed explanations: E0404, E0411.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0404`.
[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` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `hello_server` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e0d4eced8e686c71bae5870f0e33e780952fbfc255d2f56173cfc30b4ea7d92e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0d4eced8e686c71bae5870f0e33e780952fbfc255d2f56173cfc30b4ea7d92e", kill_on_drop: false }`
[INFO] [stdout] e0d4eced8e686c71bae5870f0e33e780952fbfc255d2f56173cfc30b4ea7d92e