[INFO] cloning repository https://github.com/shawtao/RustOS-v1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shawtao/RustOS-v1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshawtao%2FRustOS-v1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshawtao%2FRustOS-v1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ff877f3601319bb83cea6a95e6384737af0f61a
[INFO] checking shawtao/RustOS-v1 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshawtao%2FRustOS-v1" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shawtao/RustOS-v1 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shawtao/RustOS-v1
[INFO] finished tweaking git repo https://github.com/shawtao/RustOS-v1
[INFO] tweaked toml for git repo https://github.com/shawtao/RustOS-v1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/shawtao/RustOS-v1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 666e06f53677486601e1fc4d99f57172252287871545b7137052c5fa406e3ea6
[INFO] running `Command { std: "docker" "start" "-a" "666e06f53677486601e1fc4d99f57172252287871545b7137052c5fa406e3ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "666e06f53677486601e1fc4d99f57172252287871545b7137052c5fa406e3ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "666e06f53677486601e1fc4d99f57172252287871545b7137052c5fa406e3ea6", kill_on_drop: false }`
[INFO] [stdout] 666e06f53677486601e1fc4d99f57172252287871545b7137052c5fa406e3ea6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 489a97ffe998febecddd3cef33bb45b9402eaad8f374f2c447892d90cbe7e208
[INFO] running `Command { std: "docker" "start" "-a" "489a97ffe998febecddd3cef33bb45b9402eaad8f374f2c447892d90cbe7e208", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling x86_64 v0.14.4
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking multiboot2 v0.1.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking x86_64-blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::memory::FrameAllocator`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::memory::FrameAllocator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/vga_buffer.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 0x20...0x7e | b'\n' => self.write_byte(byte),
[INFO] [stdout]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::memory::FrameAllocator`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::memory::FrameAllocator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/vga_buffer.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 0x20...0x7e | b'\n' => self.write_byte(byte),
[INFO] [stdout]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/memory/paging/entry.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / bitflags! {
[INFO] [stdout] 35 | |     pub struct EntryFlags: u64 {
[INFO] [stdout] 36 | |         const PRESENT =         1 << 0;
[INFO] [stdout] 37 | |         const WRITABLE =        1 << 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     }
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__impl_bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `eh_personality`
[INFO] [stdout]   --> src/lib.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub extern fn eh_personality() {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `panic_unwind` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `panic_unwind` loaded from /opt/rustwide/rustup-home/toolchains/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-4695c0f6311791db.rlib
[INFO] [stdout]    = note: second definition in the local crate (`x86_64_blog_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub extern fn panic_fmt(info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1dd6c19f0820d51d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`x86_64_blog_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `memory_map_tag`
[INFO] [stdout]   --> src/memory/mod.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let memory_map_tag = boot_info.memory_map_tag()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_memory_map_tag`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frame`
[INFO] [stdout]   --> src/memory/Area_frame_allocator.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn deallocate_frame(&mut self, frame: Frame) {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/memory/paging/mod.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut p3 = self.p4_mut().next_table_create(page.p4_index(), allocator);
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/memory/paging/mod.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut p2 = p3.next_table_create(page.p3_index(), allocator);
[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/memory/paging/mod.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut p1 = p2.next_table_create(page.p2_index(), allocator);
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64-blog_os` due to 3 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function is never used: `start_address`
[INFO] [stdout]   --> src/memory/paging/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn start_address(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `map`
[INFO] [stdout]    --> src/memory/paging/mod.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn map<A>(&mut self, page: Page, flags: EntryFlags, allocator: &mut A)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `identity_map`
[INFO] [stdout]    --> src/memory/paging/mod.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn identity_map<A>(&mut self, frame: Frame, flags:EntryFlags,
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmap`
[INFO] [stdout]    --> src/memory/paging/mod.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn unmap<A>(&mut self, page: Page, allocator: &mut A)
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Area_frame_allocator` should have a snake case name
[INFO] [stdout]  --> src/memory/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Area_frame_allocator;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `area_frame_allocator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "489a97ffe998febecddd3cef33bb45b9402eaad8f374f2c447892d90cbe7e208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "489a97ffe998febecddd3cef33bb45b9402eaad8f374f2c447892d90cbe7e208", kill_on_drop: false }`
[INFO] [stdout] 489a97ffe998febecddd3cef33bb45b9402eaad8f374f2c447892d90cbe7e208