[INFO] fetching crate bern-test 0.1.0...
[INFO] testing bern-test-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate bern-test 0.1.0 into /workspace/builds/worker-104/source
[INFO] validating manifest of crates.io crate bern-test 0.1.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bern-test 0.1.0
[INFO] finished tweaking crates.io crate bern-test 0.1.0
[INFO] tweaked toml for crates.io crate bern-test 0.1.0 written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a939444e83c1945b1f357bf7d44dcf0fd17d1cc10bf71f1ca5b7506d84033073
[INFO] running `Command { std: "docker" "start" "-a" "a939444e83c1945b1f357bf7d44dcf0fd17d1cc10bf71f1ca5b7506d84033073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a939444e83c1945b1f357bf7d44dcf0fd17d1cc10bf71f1ca5b7506d84033073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a939444e83c1945b1f357bf7d44dcf0fd17d1cc10bf71f1ca5b7506d84033073", kill_on_drop: false }`
[INFO] [stdout] a939444e83c1945b1f357bf7d44dcf0fd17d1cc10bf71f1ca5b7506d84033073
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f9780c50881a9d118d9afd90e8267dce330e9acc0dd9a09a68074afca6fbab5
[INFO] running `Command { std: "docker" "start" "-a" "7f9780c50881a9d118d9afd90e8267dce330e9acc0dd9a09a68074afca6fbab5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling bern-test-macros v0.1.0
[INFO] [stderr]    Compiling bern-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
[INFO] [stdout]   --> src/serial.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |             TX = mem::transmute(&write);
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: source type: `&F` (64 bits)
[INFO] [stdout]    = note: target type: `[u8; 4]` (32 bits)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
[INFO] [stdout]   --> src/serial.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |             RX = mem::transmute(&read);
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: source type: `&F` (64 bits)
[INFO] [stdout]    = note: target type: `[u8; 4]` (32 bits)
[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 E0512`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bern-test` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7f9780c50881a9d118d9afd90e8267dce330e9acc0dd9a09a68074afca6fbab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f9780c50881a9d118d9afd90e8267dce330e9acc0dd9a09a68074afca6fbab5", kill_on_drop: false }`
[INFO] [stdout] 7f9780c50881a9d118d9afd90e8267dce330e9acc0dd9a09a68074afca6fbab5