[INFO] fetching crate rtic 2.1.2...
[INFO] checking rtic-2.1.2 against try#1d0e7c032bf9b905a3165592072b5cc63c491d50 for pr-133502-5
[INFO] extracting crate rtic 2.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate rtic 2.1.2 on toolchain 1d0e7c032bf9b905a3165592072b5cc63c491d50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1d0e7c032bf9b905a3165592072b5cc63c491d50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rtic 2.1.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rtic 2.1.2
[INFO] tweaked toml for crates.io crate rtic 2.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate rtic 2.1.2 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" "+1d0e7c032bf9b905a3165592072b5cc63c491d50" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1d0e7c032bf9b905a3165592072b5cc63c491d50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 271c168abfd616e90309723197d320c5afdfeaa36ffa089cbfd74e240fca414d
[INFO] running `Command { std: "docker" "start" "-a" "271c168abfd616e90309723197d320c5afdfeaa36ffa089cbfd74e240fca414d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "271c168abfd616e90309723197d320c5afdfeaa36ffa089cbfd74e240fca414d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271c168abfd616e90309723197d320c5afdfeaa36ffa089cbfd74e240fca414d", kill_on_drop: false }`
[INFO] [stdout] 271c168abfd616e90309723197d320c5afdfeaa36ffa089cbfd74e240fca414d
[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=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1d0e7c032bf9b905a3165592072b5cc63c491d50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b9cc370f307e0a26da6ecce14b4442d0c33376f287069c262efd347070ea712
[INFO] running `Command { std: "docker" "start" "-a" "2b9cc370f307e0a26da6ecce14b4442d0c33376f287069c262efd347070ea712", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling serde v1.0.175
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling portable-atomic v1.6.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling rtic v2.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling lm3s6965 v0.2.0
[INFO] [stderr]    Compiling trybuild v1.0.82
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr] error: failed to run custom build command for `rtic v2.1.2 (/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-52831bf0d608bb43/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at build.rs:18:34:
[INFO] [stderr]   No backend feature selected.
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x63d547312be2 - std::backtrace_rs::backtrace::libunwind::trace::h6b2b286a3ab852a7
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x63d547312be2 - std::backtrace_rs::backtrace::trace_unsynchronized::h163d4be22ad46c4e
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x63d547312be2 - std::sys::backtrace::_print_fmt::heb7917edb0aaa960
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x63d547312be2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hba05984b66909775
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x63d54732e6b3 - core::fmt::rt::Argument::fmt::h26d8275d25ab5d4b
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/fmt/rt.rs:179:76
[INFO] [stderr]      5:     0x63d54732e6b3 - core::fmt::write::h38203090c1dab928
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/fmt/mod.rs:1481:25
[INFO] [stderr]      6:     0x63d5473108b3 - std::io::default_write_fmt::h228d92d53f625860
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x63d5473108b3 - std::io::Write::write_fmt::h7e48a3666ab78e42
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/io/mod.rs:1914:13
[INFO] [stderr]      8:     0x63d547312a32 - std::sys::backtrace::BacktraceLock::print::h55ed9d1b43ec64e5
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x63d547313aa2 - std::panicking::default_hook::{{closure}}::hb989fd6aa4d9796f
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:300:22
[INFO] [stderr]     10:     0x63d5473138a5 - std::panicking::default_hook::hba221439722ab1f3
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x63d547314372 - std::panicking::rust_panic_with_hook::h70ac4842a61c6232
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x63d54731420a - std::panicking::begin_panic_handler::{{closure}}::hc8e9d138a1ec19b4
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x63d5473130d9 - std::sys::backtrace::__rust_end_short_backtrace::hcdb761d27cb00b38
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x63d547313e9d - __rustc[8e96c245505cff7]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x63d54732db80 - core::panicking::panic_fmt::hdc0babe8393d0ee7
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x63d54732db5b - core::panicking::panic_display::h2ca640de0621ad8b
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/panicking.rs:261:5
[INFO] [stderr]     17:     0x63d54732db5b - core::option::expect_failed::hd62c0f21d900dea7
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/option.rs:2049:5
[INFO] [stderr]     18:     0x63d5472f07e1 - core::option::Option<T>::expect::h7b30dda495395c28
[INFO] [stderr]     19:     0x63d5472f2129 - build_script_build::main::h1a585578f84970dd
[INFO] [stderr]     20:     0x63d5472ef453 - core::ops::function::FnOnce::call_once::hf7213b7051c43d40
[INFO] [stderr]     21:     0x63d5472ef106 - std::sys::backtrace::__rust_begin_short_backtrace::hebe36792545c458b
[INFO] [stderr]     22:     0x63d5472ef0e9 - std::rt::lang_start::{{closure}}::h6b268c36feb04f83
[INFO] [stderr]     23:     0x63d54730d6b0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h586e669ef7354510
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     24:     0x63d54730d6b0 - std::panicking::try::do_call::haa1646f279466468
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x63d54730d6b0 - std::panicking::try::h4709c7e002be178f
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x63d54730d6b0 - std::panic::catch_unwind::hebddd59499066416
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x63d54730d6b0 - std::rt::lang_start_internal::{{closure}}::h4e82485b92b5498a
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/rt.rs:168:24
[INFO] [stderr]     28:     0x63d54730d6b0 - std::panicking::try::do_call::hbdb42974981679b2
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x63d54730d6b0 - std::panicking::try::hb019f5c45ac731c7
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x63d54730d6b0 - std::panic::catch_unwind::h233e5f2da96e1661
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x63d54730d6b0 - std::rt::lang_start_internal::h6d7eab81bc6462e6
[INFO] [stderr]                                  at /rustc/1d0e7c032bf9b905a3165592072b5cc63c491d50/library/std/src/rt.rs:164:5
[INFO] [stderr]     32:     0x63d5472ef0d1 - std::rt::lang_start::h01958cb3e1d653e3
[INFO] [stderr]     33:     0x63d5472f2685 - main
[INFO] [stderr]     34:     0x74a3097fd1ca - <unknown>
[INFO] [stderr]     35:     0x74a3097fd28b - __libc_start_main
[INFO] [stderr]     36:     0x63d5472ee9d5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2b9cc370f307e0a26da6ecce14b4442d0c33376f287069c262efd347070ea712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b9cc370f307e0a26da6ecce14b4442d0c33376f287069c262efd347070ea712", kill_on_drop: false }`
[INFO] [stdout] 2b9cc370f307e0a26da6ecce14b4442d0c33376f287069c262efd347070ea712