[INFO] fetching crate mpv_webrpc 0.0.1...
[INFO] testing mpv_webrpc-0.0.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate mpv_webrpc 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate mpv_webrpc 0.0.1
[INFO] finished tweaking crates.io crate mpv_webrpc 0.0.1
[INFO] tweaked toml for crates.io crate mpv_webrpc 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mpv_webrpc 0.0.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mpv_webrpc 0.0.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930
[INFO] running `Command { std: "docker" "start" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930", 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" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling pear_codegen v0.1.4
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]    Compiling serde v1.0.112
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.4`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_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/release/build/pear_codegen-f7bdf51a5376de9a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Pear requires a 'dev' or 'nightly' version of rustc.
[INFO] [stderr]   Installed version: 1.99.0 (2026-09-26)
[INFO] [stderr]   Minimum required:  1.31.0-nightly (2018-10-05)
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (638) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pear_codegen-0.1.4/build.rs:24:13:
[INFO] [stderr]   Aborting compilation due to incompatible compiler.
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x59cda5e76e61 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x59cda5e8856a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x59cda5e7af3c - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x59cda5e5a386 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x59cda5e72cc1 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x59cda5e72e7b - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x59cda5e599ec - std[70759c8f55707aa4]::panicking::begin_panic::<&str>::{closure#0}
[INFO] [stderr]      7:     0x59cda5e532e9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::begin_panic<&str>::{closure#0}, !>
[INFO] [stderr]      8:     0x59cda5e5082b - std[70759c8f55707aa4]::panicking::begin_panic::<&str>
[INFO] [stderr]      9:     0x59cda5e39e4a - build_script_build[f5c2e5733ff4abe0]::main
[INFO] [stderr]     10:     0x59cda5e3bbd3 - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     11:     0x59cda5e396b6 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     12:     0x59cda5e39869 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     13:     0x59cda5e720f9 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     14:     0x59cda5e39671 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     15:     0x59cda5e3bc55 - main
[INFO] [stderr]     16:     0x74281979b601 - <unknown>
[INFO] [stderr]     17:     0x74281979b718 - __libc_start_main
[INFO] [stderr]     18:     0x59cda5e38bd5 - _start
[INFO] [stderr]     19:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930", kill_on_drop: false }`
[INFO] [stdout] 18c8ecbcc3d3140576fb68065579f44aa88cb7dff55029cd1e1a6030bbe15930
