[INFO] cloning repository https://github.com/cite-reader/rust-http-server [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cite-reader/rust-http-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Frust-http-server", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Frust-http-server'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d5e0c5e1607cf989507be23418f91391c4135b1a [INFO] testing cite-reader/rust-http-server against beta-2026-04-21 for beta-1.96-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcite-reader%2Frust-http-server" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/cite-reader/rust-http-server [INFO] finished tweaking git repo https://github.com/cite-reader/rust-http-server [INFO] tweaked toml for git repo https://github.com/cite-reader/rust-http-server written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/cite-reader/rust-http-server on toolchain beta-2026-04-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/cite-reader/rust-http-server 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toml` dependency) [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b4d553fe5eda9dcdff4e8ca41b2acec724f9493348a3071f3e65339221fb24da [INFO] running `Command { std: "docker" "start" "-a" "b4d553fe5eda9dcdff4e8ca41b2acec724f9493348a3071f3e65339221fb24da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b4d553fe5eda9dcdff4e8ca41b2acec724f9493348a3071f3e65339221fb24da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4d553fe5eda9dcdff4e8ca41b2acec724f9493348a3071f3e65339221fb24da", kill_on_drop: false }` [INFO] [stdout] b4d553fe5eda9dcdff4e8ca41b2acec724f9493348a3071f3e65339221fb24da [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9f41e2dc64dbd47cce2e3698f880f42651a20c4f39484d3833c7099dcb36803e [INFO] running `Command { std: "docker" "start" "-a" "9f41e2dc64dbd47cce2e3698f880f42651a20c4f39484d3833c7099dcb36803e", kill_on_drop: false }` [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toml` dependency) [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] Compiling libc v0.2.8 [INFO] [stderr] Compiling phf_shared v0.7.13 [INFO] [stderr] Compiling regex-syntax v0.3.1 [INFO] [stderr] Compiling utf8-ranges v0.1.3 [INFO] [stderr] Compiling mempool v0.2.0 [INFO] [stderr] Compiling vec_map v0.6.0 [INFO] [stderr] Compiling unicode-width v0.1.3 [INFO] [stderr] Compiling bitflags v0.4.0 [INFO] [stderr] Compiling strsim v0.4.0 [INFO] [stderr] Compiling ansi_term v0.7.2 [INFO] [stderr] Compiling byteorder v0.5.1 [INFO] [stderr] Compiling nom v1.2.2 [INFO] [stderr] Compiling toml v0.1.28 [INFO] [stderr] Compiling httparse v1.1.1 [INFO] [stderr] Compiling phf v0.7.13 [INFO] [stderr] Compiling rand v0.3.14 [INFO] [stderr] Compiling memchr v0.1.10 [INFO] [stderr] Compiling log v0.3.5 [INFO] [stderr] Compiling clap v2.2.2 [INFO] [stdout] error: missing fragment specifier [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-2.2.2/src/macros.rs:465:34 [INFO] [stdout] | [INFO] [stdout] 465 | (@arg ($arg:expr) $modes:tt !$ident $($tail:tt)*) => { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: fragment specifiers must be provided [INFO] [stdout] = help: valid fragment specifiers are `ident`, `block`, `stmt`, `expr`, `pat`, `ty`, `lifetime`, `literal`, `path`, `meta`, `tt`, `item` and `vis`, along with `expr_2021` and `pat_param` for edition compatibility [INFO] [stdout] help: try adding a specifier here [INFO] [stdout] | [INFO] [stdout] 465 | (@arg ($arg:expr) $modes:tt !$ident:spec $($tail:tt)*) => { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling aho-corasick v0.5.1 [INFO] [stderr] Compiling mime v0.2.0 [INFO] [stderr] Compiling phf_generator v0.7.13 [INFO] [stderr] Compiling phf_codegen v0.7.13 [INFO] [stderr] Compiling mime_guess v1.6.0 [INFO] [stderr] Compiling regex v0.1.59 [INFO] [stderr] error: failed to run custom build command for `mime_guess v1.6.0` [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/mime_guess-4f1fc1dd11169623/build-script-gen_mime_types` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] thread 'main' (244) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mime_guess-1.6.0/src/gen_mime_types.rs:16:67: [INFO] [stderr] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x575af8fe091a - std[128c3efe2914e152]::backtrace_rs::backtrace::libunwind::trace [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x575af8fe091a - std[128c3efe2914e152]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x575af8fe091a - std[128c3efe2914e152]::sys::backtrace::_print_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9 [INFO] [stderr] 3: 0x575af8fe091a - <::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26 [INFO] [stderr] 4: 0x575af8ff1ffa - ::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76 [INFO] [stderr] 5: 0x575af8ff1ffa - core[6771d259883166e6]::fmt::write [INFO] [stderr] 6: 0x575af8fe41e2 - std[128c3efe2914e152]::io::default_write_fmt:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11 [INFO] [stderr] 7: 0x575af8fe41e2 - ::write_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13 [INFO] [stderr] 8: 0x575af8fcc13f - ::print [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9 [INFO] [stderr] 9: 0x575af8fcc13f - std[128c3efe2914e152]::panicking::default_hook::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27 [INFO] [stderr] 10: 0x575af8fdc871 - std[128c3efe2914e152]::panicking::default_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9 [INFO] [stderr] 11: 0x575af8fdca2b - std[128c3efe2914e152]::panicking::panic_with_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13 [INFO] [stderr] 12: 0x575af8fcc1f8 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13 [INFO] [stderr] 13: 0x575af8fc16b9 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18 [INFO] [stderr] 14: 0x575af8fccadd - __rustc[752cc74e29381ccc]::rust_begin_unwind [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5 [INFO] [stderr] 15: 0x575af8ff26ac - core[6771d259883166e6]::panicking::panic_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x575af8ff2482 - core[6771d259883166e6]::result::unwrap_failed [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1867:5 [INFO] [stderr] 17: 0x575af8fa7b56 - build_script_gen_mime_types::main::h591a577933c45640 [INFO] [stderr] 18: 0x575af8fa8913 - core::ops::function::FnOnce::call_once::hfd479375acd4fe1e [INFO] [stderr] 19: 0x575af8fabef6 - std::sys::backtrace::__rust_begin_short_backtrace::ha70050019ebb2caa [INFO] [stderr] 20: 0x575af8fabcb9 - std::rt::lang_start::{{closure}}::h264e93457b74a3a6 [INFO] [stderr] 21: 0x575af8fdbff4 - <&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:287:21 [INFO] [stderr] 22: 0x575af8fdbff4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 23: 0x575af8fdbff4 - std[128c3efe2914e152]::panicking::catch_unwind:: + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 24: 0x575af8fdbff4 - std[128c3efe2914e152]::panic::catch_unwind::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 25: 0x575af8fdbff4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24 [INFO] [stderr] 26: 0x575af8fdbff4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 27: 0x575af8fdbff4 - std[128c3efe2914e152]::panicking::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 28: 0x575af8fdbff4 - std[128c3efe2914e152]::panic::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 29: 0x575af8fdbff4 - std[128c3efe2914e152]::rt::lang_start_internal [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5 [INFO] [stderr] 30: 0x575af8fabca1 - std::rt::lang_start::hf203595aa0d2d22e [INFO] [stderr] 31: 0x575af8faabf5 - main [INFO] [stderr] 32: 0x76f696d0f1ca - [INFO] [stderr] 33: 0x76f696d0f28b - __libc_start_main [INFO] [stderr] 34: 0x575af8fa46d5 - _start [INFO] [stderr] 35: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `clap` (lib) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "9f41e2dc64dbd47cce2e3698f880f42651a20c4f39484d3833c7099dcb36803e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f41e2dc64dbd47cce2e3698f880f42651a20c4f39484d3833c7099dcb36803e", kill_on_drop: false }` [INFO] [stdout] 9f41e2dc64dbd47cce2e3698f880f42651a20c4f39484d3833c7099dcb36803e