[INFO] fetching crate octopos 0.1.0...
[INFO] testing octopos-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate octopos 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate octopos 0.1.0
[INFO] finished tweaking crates.io crate octopos 0.1.0
[INFO] tweaked toml for crates.io crate octopos 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate octopos 0.1.0 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 octopos 0.1.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded buddy-alloc v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 5069fb759012aa693380990dffbbd6f67af843afb6900165ea2a7a1346864940
[INFO] running `Command { std: "docker" "start" "-a" "5069fb759012aa693380990dffbbd6f67af843afb6900165ea2a7a1346864940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5069fb759012aa693380990dffbbd6f67af843afb6900165ea2a7a1346864940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5069fb759012aa693380990dffbbd6f67af843afb6900165ea2a7a1346864940", kill_on_drop: false }`
[INFO] [stdout] 5069fb759012aa693380990dffbbd6f67af843afb6900165ea2a7a1346864940
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8f3a6cb7b5a21750d4db2887b48b752f7fa332357da42d21971dd8d88c1facb1
[INFO] running `Command { std: "docker" "start" "-a" "8f3a6cb7b5a21750d4db2887b48b752f7fa332357da42d21971dd8d88c1facb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling octopos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling buddy-alloc v0.5.1
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]  --> src/kernelvec.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[naked]
[INFO] [stdout]   |   ^^^^^ usage of unsafe attribute
[INFO] [stdout]   |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[unsafe(naked)]
[INFO] [stdout]   |   +++++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `naked_functions` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(naked_functions)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[repr(align(...))]` is not supported on functions
[INFO] [stdout]  --> src/kernelvec.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[repr(align(16))]
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: use `#[rustc_align(...)]` instead
[INFO] [stdout]  --> src/kernelvec.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[repr(align(16))]
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: the `asm!` macro is not allowed in naked functions
[INFO] [stdout]   --> src/kernelvec.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     asm!(
[INFO] [stdout] 13 | |         "csrrw a0, mscratch, a0",
[INFO] [stdout] 14 | |         "sd a1, 0(a0)",
[INFO] [stdout] 15 | |         "sd a2, 8(a0)",
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |         options(noreturn)
[INFO] [stdout] 33 | |     );
[INFO] [stdout]    | |_____^ consider using the `naked_asm!` macro instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/proc.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |     let mut proc = Cpus::myproc().unwrap();
[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: unused variable: `chan`
[INFO] [stdout]    --> src/proc.rs:173:14
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn sleep(chan: usize, lock: SpinLock) {
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_chan`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]    --> src/proc.rs:173:27
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn sleep(chan: usize, lock: SpinLock) {
[INFO] [stdout]     |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `proc`
[INFO] [stdout]    --> src/proc.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |     let mut proc = Cpus::myproc().unwrap();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_proc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/uart.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |         while let Some(c) = self.getc() {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0787`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `octopos` (lib) due to 3 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8f3a6cb7b5a21750d4db2887b48b752f7fa332357da42d21971dd8d88c1facb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3a6cb7b5a21750d4db2887b48b752f7fa332357da42d21971dd8d88c1facb1", kill_on_drop: false }`
[INFO] [stdout] 8f3a6cb7b5a21750d4db2887b48b752f7fa332357da42d21971dd8d88c1facb1