[INFO] fetching crate vga 0.2.7...
[INFO] checking vga-0.2.7 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate vga 0.2.7 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate vga 0.2.7 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-84/source/rust-toolchain
[INFO] started tweaking crates.io crate vga 0.2.7
[INFO] finished tweaking crates.io crate vga 0.2.7
[INFO] tweaked toml for crates.io crate vga 0.2.7 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30d9b4e5f13a92a96483a23540640fcc31d2a4f25f832505c89d854372d13de8
[INFO] running `Command { std: "docker" "start" "-a" "30d9b4e5f13a92a96483a23540640fcc31d2a4f25f832505c89d854372d13de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30d9b4e5f13a92a96483a23540640fcc31d2a4f25f832505c89d854372d13de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d9b4e5f13a92a96483a23540640fcc31d2a4f25f832505c89d854372d13de8", kill_on_drop: false }`
[INFO] [stdout] 30d9b4e5f13a92a96483a23540640fcc31d2a4f25f832505c89d854372d13de8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 976c8d5b0c2700554bd336707f438c3c62bd89646f02598c8a0ec66b5314a70d
[INFO] running `Command { std: "docker" "start" "-a" "976c8d5b0c2700554bd336707f438c3c62bd89646f02598c8a0ec66b5314a70d", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.14.5
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking font8x8 v0.3.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]     Checking vga v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `st00_read`
[INFO] [stdout]   --> src/registers/general.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     st00_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st01_read_cga`
[INFO] [stdout]   --> src/registers/general.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     st01_read_cga: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st01_read_mda`
[INFO] [stdout]   --> src/registers/general.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     st01_read_mda: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_read`
[INFO] [stdout]   --> src/registers/general.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fcr_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_write_cga`
[INFO] [stdout]   --> src/registers/general.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fcr_write_cga: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_write_mda`
[INFO] [stdout]   --> src/registers/general.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fcr_write_mda: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st00_read`
[INFO] [stdout]   --> src/registers/general.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     st00_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st01_read_cga`
[INFO] [stdout]   --> src/registers/general.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     st01_read_cga: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st01_read_mda`
[INFO] [stdout]   --> src/registers/general.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     st01_read_mda: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_read`
[INFO] [stdout]   --> src/registers/general.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fcr_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_write_cga`
[INFO] [stdout]   --> src/registers/general.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fcr_write_cga: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fcr_write_mda`
[INFO] [stdout]   --> src/registers/general.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fcr_write_mda: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.43s
[INFO] running `Command { std: "docker" "inspect" "976c8d5b0c2700554bd336707f438c3c62bd89646f02598c8a0ec66b5314a70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "976c8d5b0c2700554bd336707f438c3c62bd89646f02598c8a0ec66b5314a70d", kill_on_drop: false }`
[INFO] [stdout] 976c8d5b0c2700554bd336707f438c3c62bd89646f02598c8a0ec66b5314a70d