[INFO] cloning repository https://github.com/vrmiguel/incipio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vrmiguel/incipio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrmiguel%2Fincipio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrmiguel%2Fincipio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e96a42b98182edc2c20ce8178212b4b769b395a1
[INFO] checking vrmiguel/incipio against f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1 for pr-160235-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrmiguel%2Fincipio" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vrmiguel/incipio
[INFO] finished tweaking git repo https://github.com/vrmiguel/incipio
[INFO] tweaked toml for git repo https://github.com/vrmiguel/incipio written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vrmiguel/incipio on toolchain f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vrmiguel/incipio 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" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c
[INFO] running `Command { std: "docker" "start" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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] [stderr]    Compiling incipio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `incipio v0.1.0 (/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/incipio/59bc6a2b20fccd4d/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (204) panicked at build.rs:7:10:
[INFO] [stderr]   Failed to create rand_seed.rs: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x569053553411 - std[b1f6c66a58d8231]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x569053553411 - std[b1f6c66a58d8231]::backtrace_rs::backtrace::trace_unsynchronized::<std[b1f6c66a58d8231]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x569053553411 - std[b1f6c66a58d8231]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x569053553411 - <<std[b1f6c66a58d8231]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[13f8271335efa198]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x569053563a5a - <core[13f8271335efa198]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x569053563a5a - core[13f8271335efa198]::fmt::write
[INFO] [stderr]      6:     0x56905355665c - core[13f8271335efa198]::io::write::default_write_fmt::<std[b1f6c66a58d8231]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/io/write.rs:402:11
[INFO] [stderr]      7:     0x56905355665c - <std[b1f6c66a58d8231]::sys::stdio::unix::Stderr as core[13f8271335efa198]::io::write::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/io/write.rs:335:13
[INFO] [stderr]      8:     0x56905353d116 - <std[b1f6c66a58d8231]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x56905353d116 - std[b1f6c66a58d8231]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:289:27
[INFO] [stderr]     10:     0x56905354fb41 - std[b1f6c66a58d8231]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:316:9
[INFO] [stderr]     11:     0x56905354fcfb - std[b1f6c66a58d8231]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:811:13
[INFO] [stderr]     12:     0x56905353d1c2 - std[b1f6c66a58d8231]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:685:13
[INFO] [stderr]     13:     0x569053537199 - std[b1f6c66a58d8231]::sys::backtrace::__rust_end_short_backtrace::<std[b1f6c66a58d8231]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x56905353d95d - __rustc[2acb00ef313e6717]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:676:5
[INFO] [stderr]     15:     0x56905356414c - core[13f8271335efa198]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x569053563f22 - core[13f8271335efa198]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/result.rs:1870:5
[INFO] [stderr]     17:     0x569053529052 - <core[13f8271335efa198]::result::Result<std[b1f6c66a58d8231]::fs::File, core[13f8271335efa198]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x569053528ef1 - build_script_build[2f02c5a779d6fa84]::main
[INFO] [stderr]     19:     0x569053529d2b - <fn() as core[13f8271335efa198]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x569053528dbe - std[b1f6c66a58d8231]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x569053528e79 - std[b1f6c66a58d8231]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x56905354f2e8 - <&dyn core[13f8271335efa198]::ops::function::Fn<(), Output = i32> + core[13f8271335efa198]::marker::Sync + core[13f8271335efa198]::panic::unwind_safe::RefUnwindSafe as core[13f8271335efa198]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x56905354f2e8 - std[b1f6c66a58d8231]::panicking::catch_unwind::do_call::<&dyn core[13f8271335efa198]::ops::function::Fn<(), Output = i32> + core[13f8271335efa198]::marker::Sync + core[13f8271335efa198]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:573:43
[INFO] [stderr]     24:     0x56905354f2e8 - std[b1f6c66a58d8231]::panicking::catch_unwind::<i32, &dyn core[13f8271335efa198]::ops::function::Fn<(), Output = i32> + core[13f8271335efa198]::marker::Sync + core[13f8271335efa198]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:541:19
[INFO] [stderr]     25:     0x56905354f2e8 - std[b1f6c66a58d8231]::panic::catch_unwind::<&dyn core[13f8271335efa198]::ops::function::Fn<(), Output = i32> + core[13f8271335efa198]::marker::Sync + core[13f8271335efa198]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x56905354f2e8 - std[b1f6c66a58d8231]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x56905354f2e8 - std[b1f6c66a58d8231]::panicking::catch_unwind::do_call::<std[b1f6c66a58d8231]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:573:43
[INFO] [stderr]     28:     0x56905354f2e8 - std[b1f6c66a58d8231]::panicking::catch_unwind::<isize, std[b1f6c66a58d8231]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panicking.rs:541:19
[INFO] [stderr]     29:     0x56905354f2e8 - std[b1f6c66a58d8231]::panic::catch_unwind::<std[b1f6c66a58d8231]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x56905354f2e8 - std[b1f6c66a58d8231]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x569053528cc1 - std[b1f6c66a58d8231]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x56905352a005 - main
[INFO] [stderr]     33:     0x704349016601 - <unknown>
[INFO] [stderr]     34:     0x704349016718 - __libc_start_main
[INFO] [stderr]     35:     0x569053528585 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c", kill_on_drop: false }`
[INFO] [stdout] f47f3f0ce04d4aaec9012453bb0e5ee477a4ff69dcf5fcfe1114e69b2f600c4c
