[INFO] fetching crate kuchiki 0.8.1...
[INFO] checking kuchiki-0.8.1 against try#c34df645207dd0b6887b2312cf109109ba3a0ffb for pr-102513-1
[INFO] extracting crate kuchiki 0.8.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate kuchiki 0.8.1 on toolchain c34df645207dd0b6887b2312cf109109ba3a0ffb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c34df645207dd0b6887b2312cf109109ba3a0ffb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kuchiki 0.8.1
[INFO] finished tweaking crates.io crate kuchiki 0.8.1
[INFO] tweaked toml for crates.io crate kuchiki 0.8.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate kuchiki 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c34df645207dd0b6887b2312cf109109ba3a0ffb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c34df645207dd0b6887b2312cf109109ba3a0ffb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae83f99fdb99856d1012818cb5ada46def295e5d75e5fcab83e133c4439e99f7
[INFO] running `Command { std: "docker" "start" "-a" "ae83f99fdb99856d1012818cb5ada46def295e5d75e5fcab83e133c4439e99f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae83f99fdb99856d1012818cb5ada46def295e5d75e5fcab83e133c4439e99f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae83f99fdb99856d1012818cb5ada46def295e5d75e5fcab83e133c4439e99f7", kill_on_drop: false }`
[INFO] [stdout] ae83f99fdb99856d1012818cb5ada46def295e5d75e5fcab83e133c4439e99f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c34df645207dd0b6887b2312cf109109ba3a0ffb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a9ebe3962cdb392ebd9afb5523d7200dcd4688dc83066cc677a327e5ca5b2c0
[INFO] running `Command { std: "docker" "start" "-a" "9a9ebe3962cdb392ebd9afb5523d7200dcd4688dc83066cc677a327e5ca5b2c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stdout] error[E0791]: reference to packed field is unaligned
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tendril-0.4.1/src/tendril.rs:241:20
[INFO] [stdout]     |
[INFO] [stdout] 241 |                 if (*header).refcount.decrement() == 1 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
[INFO] [stdout]     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0791]: reference to packed field is unaligned
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tendril-0.4.1/src/tendril.rs:958:9
[INFO] [stdout]     |
[INFO] [stdout] 958 |         (*self.header()).refcount.increment();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
[INFO] [stdout]     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0791`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tendril` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9a9ebe3962cdb392ebd9afb5523d7200dcd4688dc83066cc677a327e5ca5b2c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9ebe3962cdb392ebd9afb5523d7200dcd4688dc83066cc677a327e5ca5b2c0", kill_on_drop: false }`
[INFO] [stdout] 9a9ebe3962cdb392ebd9afb5523d7200dcd4688dc83066cc677a327e5ca5b2c0