[INFO] fetching crate stm32g0xx-hal 0.2.0...
[INFO] testing stm32g0xx-hal-0.2.0 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate stm32g0xx-hal 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate stm32g0xx-hal 0.2.0
[INFO] finished tweaking crates.io crate stm32g0xx-hal 0.2.0
[INFO] tweaked toml for crates.io crate stm32g0xx-hal 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stm32g0xx-hal 0.2.0 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stm32g0xx-hal 0.2.0 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c835b73b33013d44b062a6a1a59870dad4297bea7bcf1534126863b86f57722
[INFO] running `Command { std: "docker" "start" "-a" "1c835b73b33013d44b062a6a1a59870dad4297bea7bcf1534126863b86f57722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c835b73b33013d44b062a6a1a59870dad4297bea7bcf1534126863b86f57722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c835b73b33013d44b062a6a1a59870dad4297bea7bcf1534126863b86f57722", kill_on_drop: false }`
[INFO] [stdout] 1c835b73b33013d44b062a6a1a59870dad4297bea7bcf1534126863b86f57722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d398b56127b4ed862542eb0c09e7a9cddc8ea1f853fb894b27e939be44c6eca
[INFO] running `Command { std: "docker" "start" "-a" "6d398b56127b4ed862542eb0c09e7a9cddc8ea1f853fb894b27e939be44c6eca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling cortex-m-rt v0.7.2
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling critical-section v1.1.1
[INFO] [stderr]    Compiling stm32g0 v0.14.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling bare-metal v1.0.0
[INFO] [stderr]    Compiling fugit v0.3.6
[INFO] [stderr] error: failed to run custom build command for `stm32g0 v0.14.0`
[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/stm32g0-e8932b1d9260b8d1/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-link-search=/opt/rustwide/target/debug/build/stm32g0-290a64b8d3593afc/out
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (251) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stm32g0-0.14.0/build.rs:32:18:
[INFO] [stderr]   No device features selected
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5b34d79a11ca - std[ec419fa8110287d5]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5b34d79a11ca - std[ec419fa8110287d5]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec419fa8110287d5]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5b34d79a11ca - std[ec419fa8110287d5]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5b34d79a11ca - <<std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[35159d6ffb30e017]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5b34d79b1e3a - <core[35159d6ffb30e017]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5b34d79b1e3a - core[35159d6ffb30e017]::fmt::write
[INFO] [stderr]      6:     0x5b34d79a4f42 - std[ec419fa8110287d5]::io::default_write_fmt::<std[ec419fa8110287d5]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x5b34d79a4f42 - <std[ec419fa8110287d5]::sys::stdio::unix::Stderr as std[ec419fa8110287d5]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x5b34d798bdff - <std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5b34d798bdff - std[ec419fa8110287d5]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5b34d799c871 - std[ec419fa8110287d5]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5b34d799ca2b - std[ec419fa8110287d5]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5b34d798b41c - std[ec419fa8110287d5]::panicking::begin_panic::<&str>::{closure#0}
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:762:9
[INFO] [stderr]     13:     0x5b34d7983ab9 - std[ec419fa8110287d5]::sys::backtrace::__rust_end_short_backtrace::<std[ec419fa8110287d5]::panicking::begin_panic<&str>::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5b34d7981320 - std[ec419fa8110287d5]::panicking::begin_panic::<&str>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:761:5
[INFO] [stderr]     15:     0x5b34d79759ec - build_script_build[a1d83dc002df7eac]::main
[INFO] [stderr]     16:     0x5b34d7976533 - <fn() as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     17:     0x5b34d7974fe6 - std[ec419fa8110287d5]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     18:     0x5b34d7975149 - std[ec419fa8110287d5]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     19:     0x5b34d799bf17 - <&dyn core[35159d6ffb30e017]::ops::function::Fn<(), Output = i32> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::panic::unwind_safe::RefUnwindSafe as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     20:     0x5b34d799bf17 - std[ec419fa8110287d5]::panicking::catch_unwind::do_call::<&dyn core[35159d6ffb30e017]::ops::function::Fn<(), Output = i32> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:581:40
[INFO] [stderr]     21:     0x5b34d799bf17 - std[ec419fa8110287d5]::panicking::catch_unwind::<i32, &dyn core[35159d6ffb30e017]::ops::function::Fn<(), Output = i32> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:544:19
[INFO] [stderr]     22:     0x5b34d799bf17 - std[ec419fa8110287d5]::panic::catch_unwind::<&dyn core[35159d6ffb30e017]::ops::function::Fn<(), Output = i32> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panic.rs:359:14
[INFO] [stderr]     23:     0x5b34d799bf17 - std[ec419fa8110287d5]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/rt.rs:175:24
[INFO] [stderr]     24:     0x5b34d799bf17 - std[ec419fa8110287d5]::panicking::catch_unwind::do_call::<std[ec419fa8110287d5]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x5b34d799bf17 - std[ec419fa8110287d5]::panicking::catch_unwind::<isize, std[ec419fa8110287d5]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x5b34d799bf17 - std[ec419fa8110287d5]::panic::catch_unwind::<std[ec419fa8110287d5]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5b34d799bf17 - std[ec419fa8110287d5]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/rt.rs:171:5
[INFO] [stderr]     28:     0x5b34d7974f61 - std[ec419fa8110287d5]::rt::lang_start::<()>
[INFO] [stderr]     29:     0x5b34d7976595 - main
[INFO] [stderr]     30:     0x7bb56f6a81ca - <unknown>
[INFO] [stderr]     31:     0x7bb56f6a828b - __libc_start_main
[INFO] [stderr]     32:     0x5b34d7974ab5 - _start
[INFO] [stderr]     33:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "6d398b56127b4ed862542eb0c09e7a9cddc8ea1f853fb894b27e939be44c6eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d398b56127b4ed862542eb0c09e7a9cddc8ea1f853fb894b27e939be44c6eca", kill_on_drop: false }`
[INFO] [stdout] 6d398b56127b4ed862542eb0c09e7a9cddc8ea1f853fb894b27e939be44c6eca
