[INFO] fetching crate serialio 0.1.2...
[INFO] testing serialio-0.1.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate serialio 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate serialio 0.1.2
[INFO] finished tweaking crates.io crate serialio 0.1.2
[INFO] tweaked toml for crates.io crate serialio 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialio 0.1.2 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 41 packages to latest compatible versions
[INFO] [stderr]       Adding cortex-m v0.5.11 (available: v0.7.7)
[INFO] [stderr]       Adding cortex-m-rt v0.6.15 (available: v0.7.5)
[INFO] [stderr]       Adding cortex-m-semihosting v0.3.7 (available: v0.5.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (available: v1.0.0)
[INFO] [stderr]       Adding panic-semihosting v0.5.6 (available: v0.6.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c25de77243ef032a3b18e25b306c6f8d25ab3bbf856a4ebef57973d28a6ab98f
[INFO] running `Command { std: "docker" "start" "-a" "c25de77243ef032a3b18e25b306c6f8d25ab3bbf856a4ebef57973d28a6ab98f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c25de77243ef032a3b18e25b306c6f8d25ab3bbf856a4ebef57973d28a6ab98f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c25de77243ef032a3b18e25b306c6f8d25ab3bbf856a4ebef57973d28a6ab98f", kill_on_drop: false }`
[INFO] [stdout] c25de77243ef032a3b18e25b306c6f8d25ab3bbf856a4ebef57973d28a6ab98f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b6ad7d7df5dcd3ecc4b93c1353002738406b2823c2d70c5548e107e7f865efd
[INFO] running `Command { std: "docker" "start" "-a" "5b6ad7d7df5dcd3ecc4b93c1353002738406b2823c2d70c5548e107e7f865efd", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling serialio v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "5b6ad7d7df5dcd3ecc4b93c1353002738406b2823c2d70c5548e107e7f865efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b6ad7d7df5dcd3ecc4b93c1353002738406b2823c2d70c5548e107e7f865efd", kill_on_drop: false }`
[INFO] [stdout] 5b6ad7d7df5dcd3ecc4b93c1353002738406b2823c2d70c5548e107e7f865efd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a6b6365d8ea661164ae95a47a724dc633b74909d38382c45f53cd9e48f21dcc
[INFO] running `Command { std: "docker" "start" "-a" "2a6b6365d8ea661164ae95a47a724dc633b74909d38382c45f53cd9e48f21dcc", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling cortex-m v0.5.11
[INFO] [stderr]    Compiling stm32f30x v0.7.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling f3 v0.6.1
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling generic-array v0.11.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling l3gd20 v0.2.0
[INFO] [stderr]    Compiling lsm303dlhc v0.2.0
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling aligned v0.3.5
[INFO] [stderr]    Compiling panic-semihosting v0.5.6
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.6.15
[INFO] [stderr]    Compiling stm32f30x-hal v0.2.0
[INFO] [stderr]    Compiling serialio v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/opt/rustwide/target/debug/examples/rustcyEcCEu/symbols.o" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libf3-322752e6c7502ae1,liblsm303dlhc-c05bc7b729f82682,libl3gd20-1771d6de1d873eda,libgeneric_array-cce2a8390500dea2,libserialio-25777bd8252783bc,libstm32f30x_hal-57ee7be68853af60,libstm32f30x-8735abe59748598f,libcortex_m_rt-fe83bbad8053fa90,libr0-f4545183635f9499,libcast-9465ca0e00c10585,libcortex_m-4d557c51ace7be69,libcortex_m-7b8a0efded6fab81,libcortex_m-4422755e44ccd2f8,libembedded_hal-275e03bf02349687,libvoid-2acb7bdf5f19c679,libnb-fbbe0bae62788985,libnb-fdbdcd6009684771,libaligned-dbf60579d3d391ff,libas_slice-fe76f5a494120190,libstable_deref_trait-d8b701728d7714bd,libgeneric_array-4679a1457bf5ccf0,libgeneric_array-a11e66ffe714e8b0,libgeneric_array-b1da788fea582a5e,libtypenum-670510b442fd83b6,libvolatile_register-ac7ccd74d90e4e20,libvcell-1ca485465d85a5e1,libbare_metal-1215a185bcc6d03a,libaligned-1752484e8f0a43ac,libpanic_semihosting-c72d4ce89c1b15f3}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/opt/rustwide/target/debug/examples/rustcyEcCEu/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/target/debug/build/cortex-m-rt-4d213001bd1db6b7/out" "-L" "/opt/rustwide/target/debug/build/f3-f7044fa67ff5f705/out" "-L" "/opt/rustwide/target/debug/build/stm32f30x-a9b07edcbc0dca2d/out" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/examples/format_output-882575f1c89f98f6" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: undefined symbol: __bkpt
[INFO] [stdout]           >>> referenced by call_asm.rs:19 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-0.7.7/src/call_asm.rs:19)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/format_output-882575f1c89f98f6.format_output.64f62cd8b5a26974-cgu.0.rcgu.o:(format_output::__cortex_m_rt_main::h9cbd3fc8bd948272)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __primask_r
[INFO] [stdout]           >>> referenced by call_asm.rs:19 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-0.7.7/src/call_asm.rs:19)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/format_output-882575f1c89f98f6.format_output.64f62cd8b5a26974-cgu.0.rcgu.o:(cortex_m::register::primask::read::hb894098626231be6)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __cpsie
[INFO] [stdout]           >>> referenced by call_asm.rs:19 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-0.7.7/src/call_asm.rs:19)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/format_output-882575f1c89f98f6.format_output.64f62cd8b5a26974-cgu.0.rcgu.o:(cortex_m::interrupt::enable::h35e1c0dd0dd90ae8)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __cpsid
[INFO] [stdout]           >>> referenced by call_asm.rs:19 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-0.7.7/src/call_asm.rs:19)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/format_output-882575f1c89f98f6.format_output.64f62cd8b5a26974-cgu.0.rcgu.o:(cortex_m::interrupt::disable::h41360172a10c3e9d)
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serialio` (example "format_output") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2a6b6365d8ea661164ae95a47a724dc633b74909d38382c45f53cd9e48f21dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6b6365d8ea661164ae95a47a724dc633b74909d38382c45f53cd9e48f21dcc", kill_on_drop: false }`
[INFO] [stdout] 2a6b6365d8ea661164ae95a47a724dc633b74909d38382c45f53cd9e48f21dcc
