[INFO] fetching crate rtic 2.2.0...
[INFO] checking rtic-2.2.0 against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] extracting crate rtic 2.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rtic 2.2.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rtic 2.2.0
[INFO] tweaked toml for crates.io crate rtic 2.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rtic 2.2.0 on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rtic 2.2.0 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" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riscv-slic-macros v0.2.0
[INFO] [stderr]   Downloaded target-triple v0.1.3
[INFO] [stderr]   Downloaded riscv-slic v0.2.0
[INFO] [stderr]   Downloaded trybuild v1.0.101
[INFO] [stderr]   Downloaded lm3s6965 v0.2.0
[INFO] [stderr]   Downloaded panic-semihosting v0.6.0
[INFO] [stderr]   Downloaded riscv v0.12.1
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.5.0
[INFO] [stderr]   Downloaded serde_derive v1.0.213
[INFO] [stderr]   Downloaded riscv v0.14.0
[INFO] [stderr]   Downloaded serde v1.0.213
[INFO] [stderr]   Downloaded syn v2.0.83
[INFO] [stderr]   Downloaded riscv-macros v0.2.0
[INFO] [stderr]   Downloaded riscv-macros v0.1.0
[INFO] [stderr]   Downloaded esp32c3 v0.29.0
[INFO] [stderr]   Downloaded esp32c6 v0.20.0
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba1bef9bba22dfe2be816715e89d90b8eafa807b5440e24060e3f20991c22dc5
[INFO] running `Command { std: "docker" "start" "-a" "ba1bef9bba22dfe2be816715e89d90b8eafa807b5440e24060e3f20991c22dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba1bef9bba22dfe2be816715e89d90b8eafa807b5440e24060e3f20991c22dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1bef9bba22dfe2be816715e89d90b8eafa807b5440e24060e3f20991c22dc5", kill_on_drop: false }`
[INFO] [stdout] ba1bef9bba22dfe2be816715e89d90b8eafa807b5440e24060e3f20991c22dc5
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53dc81523d3ed8607933bc1b62a50c34fc60b6eeb848430cca369465df3e8ba1
[INFO] running `Command { std: "docker" "start" "-a" "53dc81523d3ed8607933bc1b62a50c34fc60b6eeb848430cca369465df3e8ba1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling syn v2.0.83
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling target-triple v0.1.3
[INFO] [stderr]    Compiling portable-atomic v1.9.0
[INFO] [stderr]    Compiling hashbrown v0.15.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]     Checking winnow v0.6.20
[INFO] [stderr]    Compiling lm3s6965 v0.2.0
[INFO] [stderr]    Compiling rtic v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling indexmap v2.6.0
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking rtic-core v1.0.0
[INFO] [stderr] error: failed to run custom build command for `rtic v2.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rtic-ada587c5786fe1de/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (256) panicked at build.rs:18:34:
[INFO] [stderr]   No backend feature selected.
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x60bd013030b2 - std[f5b73ab62149f354]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x60bd013030b2 - std[f5b73ab62149f354]::backtrace_rs::backtrace::trace_unsynchronized::<std[f5b73ab62149f354]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x60bd013030b2 - std[f5b73ab62149f354]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:68:9
[INFO] [stderr]      3:     0x60bd013030b2 - <<std[f5b73ab62149f354]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c9bcc88e4c2614d]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:38:26
[INFO] [stderr]      4:     0x60bd01314c67 - <core[7c9bcc88e4c2614d]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x60bd01314c67 - core[7c9bcc88e4c2614d]::fmt::write
[INFO] [stderr]      6:     0x60bd01307216 - std[f5b73ab62149f354]::io::default_write_fmt::<std[f5b73ab62149f354]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x60bd01307216 - <std[f5b73ab62149f354]::sys::stdio::unix::Stderr as std[f5b73ab62149f354]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x60bd012edb4a - <std[f5b73ab62149f354]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:41:9
[INFO] [stderr]      9:     0x60bd012edb4a - std[f5b73ab62149f354]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x60bd012ff1b1 - std[f5b73ab62149f354]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x60bd012ff36b - std[f5b73ab62149f354]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x60bd012edc08 - std[f5b73ab62149f354]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x60bd012e5849 - std[f5b73ab62149f354]::sys::backtrace::__rust_end_short_backtrace::<std[f5b73ab62149f354]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:176:18
[INFO] [stderr]     14:     0x60bd012ee56d - __rustc[86b423d158974b9]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x60bd013152ac - core[7c9bcc88e4c2614d]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x60bd01315004 - core[7c9bcc88e4c2614d]::panicking::panic_display::<&str>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/panicking.rs:259:5
[INFO] [stderr]     17:     0x60bd01315004 - core[7c9bcc88e4c2614d]::option::expect_failed
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/option.rs:2184:5
[INFO] [stderr]     18:     0x60bd012d5b71 - <core[7c9bcc88e4c2614d]::option::Option<alloc[6392f54f5a5b7132]::string::String>>::expect
[INFO] [stderr]     19:     0x60bd012d5650 - build_script_build[16878029c18754eb]::main
[INFO] [stderr]     20:     0x60bd012d7713 - <fn() as core[7c9bcc88e4c2614d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x60bd012d4c16 - std[f5b73ab62149f354]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x60bd012d5109 - std[f5b73ab62149f354]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x60bd012fe3aa - <&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe as core[7c9bcc88e4c2614d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x60bd012fe3aa - std[f5b73ab62149f354]::panicking::catch_unwind::do_call::<&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x60bd012fe3aa - std[f5b73ab62149f354]::panicking::catch_unwind::<i32, &dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x60bd012fe3aa - std[f5b73ab62149f354]::panic::catch_unwind::<&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x60bd012fe3aa - std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x60bd012fe3aa - std[f5b73ab62149f354]::panicking::catch_unwind::do_call::<std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:581:40
[INFO] [stderr]     29:     0x60bd012fe3aa - std[f5b73ab62149f354]::panicking::catch_unwind::<isize, std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:544:19
[INFO] [stderr]     30:     0x60bd012fe3aa - std[f5b73ab62149f354]::panic::catch_unwind::<std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x60bd012fe3aa - std[f5b73ab62149f354]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x60bd012d4c01 - std[f5b73ab62149f354]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x60bd012d77d5 - main
[INFO] [stderr]     34:     0x743c6a4e31ca - <unknown>
[INFO] [stderr]     35:     0x743c6a4e328b - __libc_start_main
[INFO] [stderr]     36:     0x60bd012d3ce5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "53dc81523d3ed8607933bc1b62a50c34fc60b6eeb848430cca369465df3e8ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53dc81523d3ed8607933bc1b62a50c34fc60b6eeb848430cca369465df3e8ba1", kill_on_drop: false }`
[INFO] [stdout] 53dc81523d3ed8607933bc1b62a50c34fc60b6eeb848430cca369465df3e8ba1