[INFO] fetching crate meyl 0.1.2...
[INFO] testing meyl-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate meyl 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate meyl 0.1.2
[INFO] finished tweaking crates.io crate meyl 0.1.2
[INFO] tweaked toml for crates.io crate meyl 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate meyl 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate meyl 0.1.2 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-error v1.0.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.12
[INFO] [stderr]   Downloaded proc-macro-error-attr v1.0.2
[INFO] [stderr]   Downloaded quote v1.0.4
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.4
[INFO] [stderr]   Downloaded inline_assets v0.4.1
[INFO] [stderr]   Downloaded structopt-derive v0.4.7
[INFO] [stderr]   Downloaded stable_deref_trait v1.1.1
[INFO] [stderr]   Downloaded structopt v0.3.14
[INFO] [stderr]   Downloaded markup5ever v0.9.0
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded serde v0.9.15
[INFO] [stderr]   Downloaded cssparser v0.25.9
[INFO] [stderr]   Downloaded html2text v0.1.11
[INFO] [stderr]   Downloaded syn v1.0.19
[INFO] [stderr]   Downloaded dtoa v0.4.5
[INFO] [stderr]   Downloaded string_cache v0.7.5
[INFO] [stderr]   Downloaded backtrace v0.3.46
[INFO] [stderr]   Downloaded tendril v0.4.1
[INFO] [stderr]   Downloaded cssparser-macros v0.3.6
[INFO] [stderr]   Downloaded selectors v0.21.0
[INFO] [stderr]   Downloaded kuchiki v0.7.3
[INFO] [stderr]   Downloaded backtrace-sys v0.1.37
[INFO] [stderr]   Downloaded html5ever v0.24.1
[INFO] [stderr]   Downloaded html5ever v0.23.0
[INFO] [stderr]   Downloaded pathdiff v0.1.0
[INFO] [stderr]   Downloaded string_cache v0.5.2
[INFO] [stderr]   Downloaded html5ever-atoms v0.3.0
[INFO] [stderr]   Downloaded unindent v0.1.6
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.16
[INFO] [stderr]   Downloaded string_cache_shared v0.3.0
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.4
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded utf-8 v0.7.5
[INFO] [stderr]   Downloaded markup5ever v0.8.1
[INFO] [stderr]   Downloaded dtoa-short v0.3.2
[INFO] [stderr]   Downloaded procedural-masquerade v0.1.6
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded ignore v0.4.15
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9295ec45505d84729542318a7462bf164a0ff8c7172fdf226d39670e1bc213d
[INFO] running `Command { std: "docker" "start" "-a" "e9295ec45505d84729542318a7462bf164a0ff8c7172fdf226d39670e1bc213d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9295ec45505d84729542318a7462bf164a0ff8c7172fdf226d39670e1bc213d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9295ec45505d84729542318a7462bf164a0ff8c7172fdf226d39670e1bc213d", kill_on_drop: false }`
[INFO] [stdout] e9295ec45505d84729542318a7462bf164a0ff8c7172fdf226d39670e1bc213d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d807b8f68e16e847b559452dc83c904fe568c5e5600820625091b63ef2ae706c
[INFO] running `Command { std: "docker" "start" "-a" "d807b8f68e16e847b559452dc83c904fe568c5e5600820625091b63ef2ae706c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stdout] error[E0793]: reference to packed field is unaligned
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
[INFO] [stdout]     = note: 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[E0793]: reference to packed field is unaligned
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
[INFO] [stdout]     = note: 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] For more information about this error, try `rustc --explain E0793`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr] error: could not compile `tendril` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d807b8f68e16e847b559452dc83c904fe568c5e5600820625091b63ef2ae706c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d807b8f68e16e847b559452dc83c904fe568c5e5600820625091b63ef2ae706c", kill_on_drop: false }`
[INFO] [stdout] d807b8f68e16e847b559452dc83c904fe568c5e5600820625091b63ef2ae706c