[INFO] fetching crate localghost 0.2.0...
[INFO] checking localghost-0.2.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate localghost 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate localghost 0.2.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate localghost 0.2.0
[INFO] finished tweaking crates.io crate localghost 0.2.0
[INFO] tweaked toml for crates.io crate localghost 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a53d4bfbeb9bb206af9d2ae2aec2a7a7e0298c0a5b70b4c73a6758de431eb1a
[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" "1a53d4bfbeb9bb206af9d2ae2aec2a7a7e0298c0a5b70b4c73a6758de431eb1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a53d4bfbeb9bb206af9d2ae2aec2a7a7e0298c0a5b70b4c73a6758de431eb1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a53d4bfbeb9bb206af9d2ae2aec2a7a7e0298c0a5b70b4c73a6758de431eb1a", kill_on_drop: false }`
[INFO] [stdout] 1a53d4bfbeb9bb206af9d2ae2aec2a7a7e0298c0a5b70b4c73a6758de431eb1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb5559f6114b4bf645bdec823205788c63d823091347eb9b86524a17e7d8852b
[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" "eb5559f6114b4bf645bdec823205788c63d823091347eb9b86524a17e7d8852b", kill_on_drop: false }`
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.20
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook v0.3.4
[INFO] [stderr]    Compiling ctor v0.1.19
[INFO] [stderr]    Compiling localghost-macros v0.1.0
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.70
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking async-process v1.0.2
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.70
[INFO] [stderr]     Checking wasm-bindgen v0.2.70
[INFO] [stderr]     Checking js-sys v0.3.47
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.20
[INFO] [stderr]     Checking web-sys v0.3.47
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.20
[INFO] [stderr]     Checking localghost v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/net/event_source.rs:161:70
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 format!("EventSource({}): receiver error", self.url).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]    --> src/net/event_source.rs:161:70
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 format!("EventSource({}): receiver error", self.url).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: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `localghost`
[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" "eb5559f6114b4bf645bdec823205788c63d823091347eb9b86524a17e7d8852b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb5559f6114b4bf645bdec823205788c63d823091347eb9b86524a17e7d8852b", kill_on_drop: false }`
[INFO] [stdout] eb5559f6114b4bf645bdec823205788c63d823091347eb9b86524a17e7d8852b