[INFO] cloning repository https://github.com/Stan-breaks/OS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Stan-breaks/OS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStan-breaks%2FOS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStan-breaks%2FOS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c06d3e3805784e434cb01cc8240a1fcd9073f99
[INFO] checking Stan-breaks/OS against try#8a0378607d6b34c242e3bfa75554871be641864b for pr-143028
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStan-breaks%2FOS" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Stan-breaks/OS
[INFO] finished tweaking git repo https://github.com/Stan-breaks/OS
[INFO] tweaked toml for git repo https://github.com/Stan-breaks/OS written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Stan-breaks/OS on toolchain 8a0378607d6b34c242e3bfa75554871be641864b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Stan-breaks/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" "+8a0378607d6b34c242e3bfa75554871be641864b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr] warning: unused manifest key: target.cfg(target_os = "none").runner
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded locate-cargo-manifest v0.2.2
[INFO] [stderr]   Downloaded rustc-cfg v0.4.0
[INFO] [stderr]   Downloaded cargo_metadata v0.9.1
[INFO] [stderr]   Downloaded cargo-binutils v0.3.6
[INFO] [stderr]   Downloaded bootimage v0.10.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e649dcc38c9d3f364978ae0dc363c1e6cf8eeb0b20d4c615ad350f6b066f4c5
[INFO] running `Command { std: "docker" "start" "-a" "0e649dcc38c9d3f364978ae0dc363c1e6cf8eeb0b20d4c615ad350f6b066f4c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e649dcc38c9d3f364978ae0dc363c1e6cf8eeb0b20d4c615ad350f6b066f4c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e649dcc38c9d3f364978ae0dc363c1e6cf8eeb0b20d4c615ad350f6b066f4c5", kill_on_drop: false }`
[INFO] [stdout] 0e649dcc38c9d3f364978ae0dc363c1e6cf8eeb0b20d4c615ad350f6b066f4c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f8c394dcd38ab3d66b0ad62e85232f95b58e9aa453f8616c03c15ccf534264
[INFO] running `Command { std: "docker" "start" "-a" "94f8c394dcd38ab3d66b0ad62e85232f95b58e9aa453f8616c03c15ccf534264", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr] warning: unused manifest key: target.cfg(target_os = "none").runner
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking miniz_oxide v0.8.8
[INFO] [stderr]    Compiling camino v1.1.10
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking llvm-tools v0.1.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking locate-cargo-manifest v0.2.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rustc-cfg v0.4.0
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking cargo-platform v0.1.9
[INFO] [stderr]     Checking rustc_version v0.4.1
[INFO] [stderr]     Checking cargo_metadata v0.9.1
[INFO] [stderr]     Checking cargo_metadata v0.14.2
[INFO] [stderr]     Checking bootimage v0.10.3
[INFO] [stderr]     Checking cargo-binutils v0.3.6
[INFO] [stderr]     Checking fledge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]  --> src/main.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[no_mangle]
[INFO] [stdout]   |   ^^^^^^^^^ usage of unsafe attribute
[INFO] [stdout]   |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[unsafe(no_mangle)]
[INFO] [stdout]   |   +++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]  --> src/main.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[no_mangle]
[INFO] [stdout]   |   ^^^^^^^^^ usage of unsafe attribute
[INFO] [stdout]   |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[unsafe(no_mangle)]
[INFO] [stdout]   |   +++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]   --> src/main.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^ usage of unsafe attribute
[INFO] [stdout]    |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[unsafe(no_mangle)]
[INFO] [stdout]    |   +++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(core_intrinsics)]
[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] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / pub fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 9  | |     intrinsics::abort();
[INFO] [stdout] 10 | | }
[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/8a0378607d6b34c242e3bfa75554871be641864b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c3f1bd7325067ba3.rlib
[INFO] [stdout]    = note: second definition in the local crate (`fledge`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]   --> src/main.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^ usage of unsafe attribute
[INFO] [stdout]    |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[unsafe(no_mangle)]
[INFO] [stdout]    |   +++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(core_intrinsics)]
[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] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[no_mangle]` cannot be used on internal language items
[INFO] [stdout]  --> src/main.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[no_mangle]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 8 | pub fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]   | ------------------------------------ should be the internal language item
[INFO] [stdout]   |
[INFO] [stdout]   = note: Rustc requires this item to have a specific mangled name.
[INFO] [stdout]   = note: If you are trying to prevent mangling to ease debugging, many
[INFO] [stdout]   = note: debuggers support a command such as `rbreak rust_begin_unwind` to
[INFO] [stdout]   = note: match `.*rust_begin_unwind.*` instead of `break rust_begin_unwind` on a specific name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fledge` (bin "fledge" test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `fledge` (bin "fledge") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "94f8c394dcd38ab3d66b0ad62e85232f95b58e9aa453f8616c03c15ccf534264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f8c394dcd38ab3d66b0ad62e85232f95b58e9aa453f8616c03c15ccf534264", kill_on_drop: false }`
[INFO] [stdout] 94f8c394dcd38ab3d66b0ad62e85232f95b58e9aa453f8616c03c15ccf534264