[INFO] cloning repository https://github.com/redox-os/kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/redox-os/kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fkernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fkernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b27de416b0d01f3f132b93fbef2695f2d1131a2
[INFO] checking redox-os/kernel against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fkernel" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/redox-os/kernel on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config
[INFO] started tweaking git repo https://github.com/redox-os/kernel
[INFO] removed path dependency redox_syscall from git repo https://github.com/redox-os/kernel
[INFO] removed path dependency slab_allocator from git repo https://github.com/redox-os/kernel
[INFO] finished tweaking git repo https://github.com/redox-os/kernel
[INFO] tweaked toml for git repo https://github.com/redox-os/kernel written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/redox-os/kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (redox_syscall) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (slab_allocator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (redox_syscall) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (slab_allocator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked_list_allocator v0.6.6
[INFO] [stderr]   Downloaded x86 v0.32.0
[INFO] [stderr]   Downloaded slab_allocator v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2af05096431353387f2bfa2d652a806a16d4113a11b18b671b592cd5fd7239ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2af05096431353387f2bfa2d652a806a16d4113a11b18b671b592cd5fd7239ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2af05096431353387f2bfa2d652a806a16d4113a11b18b671b592cd5fd7239ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af05096431353387f2bfa2d652a806a16d4113a11b18b671b592cd5fd7239ff", kill_on_drop: false }`
[INFO] [stdout] 2af05096431353387f2bfa2d652a806a16d4113a11b18b671b592cd5fd7239ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fe8582774dbd507b5c05b04b7d1c80df3d4414a21d0ae13927adb9a8f545118
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6fe8582774dbd507b5c05b04b7d1c80df3d4414a21d0ae13927adb9a8f545118", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (redox_syscall) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (slab_allocator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling x86 v0.32.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]    Compiling kernel v0.1.54 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking rustc-demangle v0.1.17
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking goblin v0.2.3
[INFO] [stderr]     Checking spinning_top v0.1.1
[INFO] [stderr]     Checking linked_list_allocator v0.8.6
[INFO] [stderr]     Checking redox_syscall v0.2.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr] warning: location not found: environment variable not found, please set proper INITFS_FOLDER.
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling raw-cpuid v8.1.1
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stdout] warning: unused variable: `p3_frame`
[INFO] [stdout]    --> src/arch/x86_64/paging/mapper.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if let Some(p3_frame) = p4[page.p4_index()].pointed_frame() {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p3_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p3_frame`
[INFO] [stdout]    --> src/arch/x86_64/paging/mapper.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if let Some(p3_frame) = p4[page.p4_index()].pointed_frame() {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p3_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `space32`
[INFO] [stdout]   --> src/syscall/driver.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let space32 = flags.contains(PhysallocFlags::SPACE_32);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_space32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `space32`
[INFO] [stdout]   --> src/syscall/driver.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let space32 = flags.contains(PhysallocFlags::SPACE_32);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_space32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_ioregsel`
[INFO] [stdout]   --> src/arch/x86_64/device/ioapic.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn read_ioregsel(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RawDataBuffer`
[INFO] [stdout]    --> src/acpi/aml/namespace.rs:136:5
[INFO] [stdout]     |
[INFO] [stdout] 136 |     RawDataBuffer(Vec<u8>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_ioregsel`
[INFO] [stdout]   --> src/arch/x86_64/device/ioapic.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn read_ioregsel(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RawDataBuffer`
[INFO] [stdout]    --> src/acpi/aml/namespace.rs:136:5
[INFO] [stdout]     |
[INFO] [stdout] 136 |     RawDataBuffer(Vec<u8>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]     --> src/acpi/aml/type2opcode.rs:1592:21
[INFO] [stdout]      |
[INFO] [stdout] 1592 |                     res.split_off(len);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]     --> src/acpi/aml/type2opcode.rs:1592:21
[INFO] [stdout]      |
[INFO] [stdout] 1592 |                     res.split_off(len);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Layout`, which is not FFI-safe
[INFO] [stdout]   --> src/panic.rs:31:33
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub extern fn rust_oom(_layout: Layout) -> ! {
[INFO] [stdout]    |                                 ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 31.41s
[INFO] running `Command { std: "docker" "inspect" "6fe8582774dbd507b5c05b04b7d1c80df3d4414a21d0ae13927adb9a8f545118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe8582774dbd507b5c05b04b7d1c80df3d4414a21d0ae13927adb9a8f545118", kill_on_drop: false }`
[INFO] [stdout] 6fe8582774dbd507b5c05b04b7d1c80df3d4414a21d0ae13927adb9a8f545118