[INFO] cloning repository https://github.com/xinslu/rust-std-buzzos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xinslu/rust-std-buzzos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinslu%2Frust-std-buzzos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinslu%2Frust-std-buzzos'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/xinslu/rust-std-buzzos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xinslu/rust-std-buzzos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinslu%2Frust-std-buzzos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinslu%2Frust-std-buzzos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9d5f7d356123d8863491c4bb39b179b56efe834
[INFO] checking xinslu/rust-std-buzzos against try#15e8bc6907ab2b3623cb52acc726f4787458df64 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinslu%2Frust-std-buzzos" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xinslu/rust-std-buzzos on toolchain 15e8bc6907ab2b3623cb52acc726f4787458df64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/xinslu/rust-std-buzzos
[INFO] finished tweaking git repo https://github.com/xinslu/rust-std-buzzos
[INFO] tweaked toml for git repo https://github.com/xinslu/rust-std-buzzos written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xinslu/rust-std-buzzos 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" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-1-tc2/source/kernel/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-1-tc2/source/user/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /workspace/builds/worker-1-tc2/source/kernel/Cargo.toml: unused manifest key: profile.dev.debuginfo
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8fbb2b9651d667cce1197708dc849b1f53548c3090d0d98fcde852c6b3df910
[INFO] running `Command { std: "docker" "start" "-a" "e8fbb2b9651d667cce1197708dc849b1f53548c3090d0d98fcde852c6b3df910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8fbb2b9651d667cce1197708dc849b1f53548c3090d0d98fcde852c6b3df910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8fbb2b9651d667cce1197708dc849b1f53548c3090d0d98fcde852c6b3df910", kill_on_drop: false }`
[INFO] [stdout] e8fbb2b9651d667cce1197708dc849b1f53548c3090d0d98fcde852c6b3df910
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e2553ec30cfcd189d691bf281f11641ecc03703fd6fcb0f0a7d9dbb690c0d53
[INFO] running `Command { std: "docker" "start" "-a" "6e2553ec30cfcd189d691bf281f11641ecc03703fd6fcb0f0a7d9dbb690c0d53", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/kernel/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/user/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /opt/rustwide/workdir/kernel/Cargo.toml: unused manifest key: profile.dev.debuginfo
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking stdbuzz v0.1.0 (/opt/rustwide/workdir/libstd_buzzos)
[INFO] [stdout] error: the `#[alloc_error_handler]` in this crate conflicts with allocation error handler in: std
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `allocator_internals` is internal to the compiler or standard library
[INFO] [stdout]  --> libstd_buzzos/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(allocator_internals)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `allow_internal_unstable` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(allow_internal_unstable)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rustc_attrs` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(rustc_attrs)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(lang_items)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(prelude_import)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_internals` is internal to the compiler or standard library
[INFO] [stdout]  --> libstd_buzzos/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(ptr_internals)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:586:11
[INFO] [stdout]     |
[INFO] [stdout] 586 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:595:11
[INFO] [stdout]     |
[INFO] [stdout] 595 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:603:15
[INFO] [stdout]     |
[INFO] [stdout] 603 |         #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:620:11
[INFO] [stdout]     |
[INFO] [stdout] 620 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:628:15
[INFO] [stdout]     |
[INFO] [stdout] 628 |         #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:683:19
[INFO] [stdout]     |
[INFO] [stdout] 683 |             #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:841:16
[INFO] [stdout]     |
[INFO] [stdout] 841 |     #[cfg_attr(feature = "debug_refcell", track_caller)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:931:16
[INFO] [stdout]     |
[INFO] [stdout] 931 |     #[cfg_attr(feature = "debug_refcell", track_caller)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:845:23
[INFO] [stdout]     |
[INFO] [stdout] 845 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:861:23
[INFO] [stdout]     |
[INFO] [stdout] 861 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:935:23
[INFO] [stdout]     |
[INFO] [stdout] 935 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:951:23
[INFO] [stdout]     |
[INFO] [stdout] 951 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]     --> libstd_buzzos/src/memory/Cell.rs:1075:23
[INFO] [stdout]      |
[INFO] [stdout] 1075 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::rust_2018::*`
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub use prelude::rust_2018::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]    --> libstd_buzzos/src/lib.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 124 | |     loop {}
[INFO] [stdout] 125 | | }
[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/15e8bc6907ab2b3623cb52acc726f4787458df64/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b38d63f8b721b18d.rlib
[INFO] [stdout]     = note: second definition in the local crate (`stdbuzz`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stdbuzz` (lib test) due to 2 previous errors; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: the feature `allocator_internals` is internal to the compiler or standard library
[INFO] [stdout]  --> libstd_buzzos/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(allocator_internals)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `allow_internal_unstable` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(allow_internal_unstable)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rustc_attrs` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(rustc_attrs)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(lang_items)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(prelude_import)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_internals` is internal to the compiler or standard library
[INFO] [stdout]  --> libstd_buzzos/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(ptr_internals)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:586:11
[INFO] [stdout]     |
[INFO] [stdout] 586 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:595:11
[INFO] [stdout]     |
[INFO] [stdout] 595 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:603:15
[INFO] [stdout]     |
[INFO] [stdout] 603 |         #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:620:11
[INFO] [stdout]     |
[INFO] [stdout] 620 |     #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:628:15
[INFO] [stdout]     |
[INFO] [stdout] 628 |         #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:683:19
[INFO] [stdout]     |
[INFO] [stdout] 683 |             #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:841:16
[INFO] [stdout]     |
[INFO] [stdout] 841 |     #[cfg_attr(feature = "debug_refcell", track_caller)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:931:16
[INFO] [stdout]     |
[INFO] [stdout] 931 |     #[cfg_attr(feature = "debug_refcell", track_caller)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:845:23
[INFO] [stdout]     |
[INFO] [stdout] 845 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:861:23
[INFO] [stdout]     |
[INFO] [stdout] 861 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:935:23
[INFO] [stdout]     |
[INFO] [stdout] 935 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:951:23
[INFO] [stdout]     |
[INFO] [stdout] 951 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `debug_refcell`
[INFO] [stdout]     --> libstd_buzzos/src/memory/Cell.rs:1075:23
[INFO] [stdout]      |
[INFO] [stdout] 1075 |                 #[cfg(feature = "debug_refcell")]
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `debug_refcell` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::rust_2018::*`
[INFO] [stdout]   --> libstd_buzzos/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub use prelude::rust_2018::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> libstd_buzzos/src/memory/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_internals)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> libstd_buzzos/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: const `impl` for trait `From` which is not marked with `#[const_trait]`
[INFO] [stdout]    --> libstd_buzzos/src/memory/Cell.rs:306:15
[INFO] [stdout]     |
[INFO] [stdout] 306 | impl<T> const From<T> for Cell<T> {
[INFO] [stdout]     |               ^^^^^^^ this trait is not `const`
[INFO] [stdout]     |
[INFO] [stdout]     = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
[INFO] [stdout]     = note: adding a non-const method body in the future would be a breaking change
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: const `impl` for trait `From` which is not marked with `#[const_trait]`
[INFO] [stdout]     --> libstd_buzzos/src/memory/Cell.rs:1202:15
[INFO] [stdout]      |
[INFO] [stdout] 1202 | impl<T> const From<T> for RefCell<T> {
[INFO] [stdout]      |               ^^^^^^^ this trait is not `const`
[INFO] [stdout]      |
[INFO] [stdout]      = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
[INFO] [stdout]      = note: adding a non-const method body in the future would be a breaking change
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: const `impl` for trait `From` which is not marked with `#[const_trait]`
[INFO] [stdout]     --> libstd_buzzos/src/memory/Cell.rs:2003:15
[INFO] [stdout]      |
[INFO] [stdout] 2003 | impl<T> const From<T> for UnsafeCell<T> {
[INFO] [stdout]      |               ^^^^^^^ this trait is not `const`
[INFO] [stdout]      |
[INFO] [stdout]      = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
[INFO] [stdout]      = note: adding a non-const method body in the future would be a breaking change
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: const `impl` for trait `From` which is not marked with `#[const_trait]`
[INFO] [stdout]     --> libstd_buzzos/src/memory/Cell.rs:2082:15
[INFO] [stdout]      |
[INFO] [stdout] 2082 | impl<T> const From<T> for SyncUnsafeCell<T> {
[INFO] [stdout]      |               ^^^^^^^ this trait is not `const`
[INFO] [stdout]      |
[INFO] [stdout]      = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
[INFO] [stdout]      = note: adding a non-const method body in the future would be a breaking change
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> libstd_buzzos/src/collections/VecDeque.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut new_node: *mut Node<T> = Node::new(value);
[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]   --> libstd_buzzos/src/collections/VecDeque.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut new_node: *mut Node<T> = Node::new(value);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]   --> libstd_buzzos/src/syscalls.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut ret: usize = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]   --> libstd_buzzos/src/syscalls.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut ret: usize = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]   --> libstd_buzzos/src/syscalls.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut ret: usize = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]   --> libstd_buzzos/src/syscalls.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut ret: usize = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]  --> libstd_buzzos/src/stdio/Write.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut res: usize = 0;
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stdbuzz` (lib) due to 4 previous errors; 29 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6e2553ec30cfcd189d691bf281f11641ecc03703fd6fcb0f0a7d9dbb690c0d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e2553ec30cfcd189d691bf281f11641ecc03703fd6fcb0f0a7d9dbb690c0d53", kill_on_drop: false }`
[INFO] [stdout] 6e2553ec30cfcd189d691bf281f11641ecc03703fd6fcb0f0a7d9dbb690c0d53