[INFO] cloning repository https://github.com/opengeekv2/marc-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/opengeekv2/marc-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopengeekv2%2Fmarc-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopengeekv2%2Fmarc-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 755a755172f92d732c3e056343f7f1c5a8d1df87
[INFO] checking opengeekv2/marc-os against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopengeekv2%2Fmarc-os" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/opengeekv2/marc-os
[INFO] finished tweaking git repo https://github.com/opengeekv2/marc-os
[INFO] tweaked toml for git repo https://github.com/opengeekv2/marc-os written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/opengeekv2/marc-os on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/opengeekv2/marc-os 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `panic` setting is ignored for `test` profile
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termtree v0.4.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.53
[INFO] [stderr]   Downloaded predicates-tree v1.0.9
[INFO] [stderr]   Downloaded mockall_double v0.3.0
[INFO] [stderr]   Downloaded mockall v0.11.3
[INFO] [stderr]   Downloaded mockall_derive v0.11.3
[INFO] [stderr]   Downloaded predicates-core v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79d2f8c62407c7337db9cd78f1ee0d75182d3d7d2b6a9ed8a6b220e80a303478
[INFO] running `Command { std: "docker" "start" "-a" "79d2f8c62407c7337db9cd78f1ee0d75182d3d7d2b6a9ed8a6b220e80a303478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79d2f8c62407c7337db9cd78f1ee0d75182d3d7d2b6a9ed8a6b220e80a303478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d2f8c62407c7337db9cd78f1ee0d75182d3d7d2b6a9ed8a6b220e80a303478", kill_on_drop: false }`
[INFO] [stdout] 79d2f8c62407c7337db9cd78f1ee0d75182d3d7d2b6a9ed8a6b220e80a303478
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b6591110b70d4afb96826b7c9859b45dc4d8b1e4cb9a27a9e046f7ae4767f41
[INFO] running `Command { std: "docker" "start" "-a" "0b6591110b70d4afb96826b7c9859b45dc4d8b1e4cb9a27a9e046f7ae4767f41", kill_on_drop: false }`
[INFO] [stderr] warning: `panic` setting is ignored for `test` profile
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling marc-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking fragile v2.0.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             unsafe { 0b00000011 & self.uart_registers.lcr_pd.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             unsafe { 0b00000001 & self.uart_registers.lsr.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             unsafe { self.uart_registers.rthr_dll.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]    Compiling mockall_derive v0.11.3
[INFO] [stderr]    Compiling mockall_double v0.3.0
[INFO] [stderr]     Checking mockall v0.11.3
[INFO] [stdout] warning: unused import: `core::panic::PanicInfo`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::panic::PanicInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/uart.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             unsafe { 0b00000011 & self.uart_registers.lcr_pd.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             unsafe { 0b00000001 & self.uart_registers.lsr.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/uart.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             unsafe { self.uart_registers.rthr_dll.read() }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/uart.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut uart_driver = UARTDriver::new(uart);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/uart.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut uart_driver = UARTDriver::new(uart);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/uart.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let mut uart_driver = UARTDriver::new(uart);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UARTRegisters` is never constructed
[INFO] [stdout]   --> src/uart.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub struct UARTRegisters {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UART` is never constructed
[INFO] [stdout]   --> src/uart.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub struct UART {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/uart.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl UART {
[INFO] [stdout]    |     --------- associated items in this implementation
[INFO] [stdout] 29 |         pub fn new(uart_address: usize) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |         pub fn get_word_length(&self) -> u8 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |         pub fn set_word_length(&self, word_length: u8) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |         pub fn enable_fifo(&self) {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         pub fn enable_receiver_buffer_interrupts(&self) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |         pub fn enable_divisor_latch_access_bit(&self) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |         pub fn disable_divisor_latch_access_bit(&self) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |         pub fn set_divisor_least(&self, divisor_least: u8) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         pub fn set_divisor_most(&self, divisor_most: u8) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |         pub fn set_thr(&self, c: u8) {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |         pub fn get_dr(&self) -> u8 {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         pub fn get_rhr(&self) -> u8 {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/uart.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         uart_writer.write_str("c");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let _ = uart_writer.write_str("c");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.43s
[INFO] running `Command { std: "docker" "inspect" "0b6591110b70d4afb96826b7c9859b45dc4d8b1e4cb9a27a9e046f7ae4767f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b6591110b70d4afb96826b7c9859b45dc4d8b1e4cb9a27a9e046f7ae4767f41", kill_on_drop: false }`
[INFO] [stdout] 0b6591110b70d4afb96826b7c9859b45dc4d8b1e4cb9a27a9e046f7ae4767f41
