[INFO] fetching crate fastar 0.2.0...
[INFO] checking fastar-0.2.0 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate fastar 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate fastar 0.2.0
[INFO] finished tweaking crates.io crate fastar 0.2.0
[INFO] tweaked toml for crates.io crate fastar 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fastar 0.2.0 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fastar 0.2.0 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" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tar v0.4.38
[INFO] [stderr]   Downloaded rand_hc v0.3.1
[INFO] [stderr]   Downloaded reapfrog v0.2.0
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded minilzo-sys v0.1.0
[INFO] [stderr]   Downloaded derive-error v0.0.5
[INFO] [stderr]   Downloaded platter-walk v0.1.3
[INFO] [stderr]   Downloaded redox_syscall v0.2.10
[INFO] [stderr]   Downloaded case v0.1.0
[INFO] [stderr]   Downloaded build_const v0.2.2
[INFO] [stderr]   Downloaded minilzo v0.1.2
[INFO] [stderr]   Downloaded btrfs2 v1.2.2
[INFO] [stderr]   Downloaded mnt v0.3.1
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded rand v0.8.4
[INFO] [stderr]   Downloaded flate2 v0.2.20
[INFO] [stderr]   Downloaded miniz-sys v0.1.12
[INFO] [stderr]   Downloaded nix v0.8.1
[INFO] [stderr]   Downloaded uuid v0.3.1
[INFO] [stderr]   Downloaded crc v1.8.1
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded filetime v0.2.15
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.15
[INFO] [stderr]   Downloaded nix v0.20.2
[INFO] [stderr]   Downloaded libc v0.2.112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0777c73a8bf68774868d04d0f9a7aff7b530172c97b7853c321a69f257aea284
[INFO] running `Command { std: "docker" "start" "-a" "0777c73a8bf68774868d04d0f9a7aff7b530172c97b7853c321a69f257aea284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0777c73a8bf68774868d04d0f9a7aff7b530172c97b7853c321a69f257aea284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0777c73a8bf68774868d04d0f9a7aff7b530172c97b7853c321a69f257aea284", kill_on_drop: false }`
[INFO] [stdout] 0777c73a8bf68774868d04d0f9a7aff7b530172c97b7853c321a69f257aea284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 827db7a818ecb4b470e6a3e4fbc9d56501fc788b836cc8a92315b5cb9150d5bb
[INFO] running `Command { std: "docker" "start" "-a" "827db7a818ecb4b470e6a3e4fbc9d56501fc788b836cc8a92315b5cb9150d5bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling derive-error v0.0.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking minilzo-sys v0.1.0
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking mnt v0.3.1
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking reapfrog v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking minilzo v0.1.2
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tar v0.4.38
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking btrfs2 v1.2.2
[INFO] [stdout] error[E0793]: reference to field of packed struct is unaligned
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/btrfs2-1.2.2/src/diskformat/item/extent_data.rs:215:7
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         self.data ().other_encoding)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this struct is 1-byte aligned, but the type of this field may require higher alignment
[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] error: could not compile `btrfs2` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "827db7a818ecb4b470e6a3e4fbc9d56501fc788b836cc8a92315b5cb9150d5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827db7a818ecb4b470e6a3e4fbc9d56501fc788b836cc8a92315b5cb9150d5bb", kill_on_drop: false }`
[INFO] [stdout] 827db7a818ecb4b470e6a3e4fbc9d56501fc788b836cc8a92315b5cb9150d5bb