[INFO] cloning repository https://github.com/ozbe/xcallback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ozbe/xcallback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozbe%2Fxcallback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozbe%2Fxcallback'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 957cd0164f403d1babc749968d39ab4e93729b44
[INFO] documenting ozbe/xcallback against nightly for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozbe%2Fxcallback" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ozbe/xcallback on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ozbe/xcallback
[INFO] finished tweaking git repo https://github.com/ozbe/xcallback
[INFO] tweaked toml for git repo https://github.com/ozbe/xcallback written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ozbe/xcallback already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/ozbe/webkitten`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8abfed978d32c6815b2a0f11c742dadb3047afbab1dc4c4ccbad86e8cba48e83
[INFO] running `Command { std: "docker" "start" "-a" "8abfed978d32c6815b2a0f11c742dadb3047afbab1dc4c4ccbad86e8cba48e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8abfed978d32c6815b2a0f11c742dadb3047afbab1dc4c4ccbad86e8cba48e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8abfed978d32c6815b2a0f11c742dadb3047afbab1dc4c4ccbad86e8cba48e83", kill_on_drop: false }`
[INFO] [stdout] 8abfed978d32c6815b2a0f11c742dadb3047afbab1dc4c4ccbad86e8cba48e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a3f413bf052a40a3244b01a60e333cbb307ef6947e3f56f40aadb24a177d56d
[INFO] running `Command { std: "docker" "start" "-a" "6a3f413bf052a40a3244b01a60e333cbb307ef6947e3f56f40aadb24a177d56d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking block v0.1.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking malloc_buf v0.0.6
[INFO] [stderr]     Checking objc v0.2.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking macos v0.1.0 (https://github.com/ozbe/webkitten?branch=x-callback-url#b140bc6e)
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/webkitten-b9a4216b2355a45d/b140bc6/macos/src/appkit.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[link(name = "AppKit", kind = "framework")]
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/webkitten-b9a4216b2355a45d/b140bc6/macos/src/core_foundation.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[link(name = "CoreFoundation", kind = "framework")]
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/webkitten-b9a4216b2355a45d/b140bc6/macos/src/core_services.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[link(name = "CoreServices", kind = "framework")]
[INFO] [stdout]   |                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/webkitten-b9a4216b2355a45d/b140bc6/macos/src/foundation.rs:12:36
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[link(name = "Foundation", kind = "framework")]
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/webkitten-b9a4216b2355a45d/b140bc6/macos/src/webkit.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[link(name = "WebKit", kind = "framework")]
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0455`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `macos` due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6a3f413bf052a40a3244b01a60e333cbb307ef6947e3f56f40aadb24a177d56d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a3f413bf052a40a3244b01a60e333cbb307ef6947e3f56f40aadb24a177d56d", kill_on_drop: false }`
[INFO] [stdout] 6a3f413bf052a40a3244b01a60e333cbb307ef6947e3f56f40aadb24a177d56d