[INFO] cloning repository https://github.com/02alexander/stack4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/02alexander/stack4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F02alexander%2Fstack4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F02alexander%2Fstack4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7722bb99a7e190daaa43a2ca056077c181da1bd2
[INFO] testing 02alexander/stack4 against 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F02alexander%2Fstack4" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/02alexander/stack4
[INFO] finished tweaking git repo https://github.com/02alexander/stack4
[INFO] tweaked toml for git repo https://github.com/02alexander/stack4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/02alexander/stack4 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/02alexander/stack4 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unic-char-property v0.7.0
[INFO] [stderr]   Downloaded unic-ucd-version v0.7.0
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[INFO] [stderr]   Downloaded rocket_contrib v0.4.0-rc.1
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded unic-segment v0.7.0
[INFO] [stderr]   Downloaded unicase v1.4.2
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[INFO] [stderr]   Downloaded tera v0.11.20
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[INFO] [stderr]   Downloaded libc v0.2.44
[INFO] [stderr]   Downloaded pest_derive v2.0.1
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[INFO] [stderr]   Downloaded ryu v0.2.7
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[INFO] [stderr]   Downloaded rustc-demangle v0.1.9
[INFO] [stderr]   Downloaded cookie v0.11.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.1
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded version_check v0.1.5
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[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded itoa v0.4.3
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded bytes v0.4.11
[INFO] [stderr]   Downloaded tokio-io v0.1.10
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded lazycell v1.2.0
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[INFO] [stderr]   Downloaded devise_codegen v0.1.0
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded rocket_codegen v0.4.0-rc.1
[INFO] [stderr]   Downloaded byteorder v1.2.7
[INFO] [stderr]   Downloaded httparse v1.3.3
[INFO] [stderr]   Downloaded mime v0.2.6
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded traitobject v0.1.0
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[INFO] [stderr]   Downloaded indexmap v1.0.2
[INFO] [stderr]   Downloaded error-chain v0.12.0
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[INFO] [stderr]   Downloaded thread_local v0.3.6
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[INFO] [stderr]   Downloaded backtrace v0.3.9
[INFO] [stderr]   Downloaded tokio-executor v0.1.5
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.1
[INFO] [stderr]   Downloaded rand_core v0.2.2
[INFO] [stderr]   Downloaded devise_core v0.1.0
[INFO] [stderr]   Downloaded hyper v0.10.15
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded devise v0.1.0
[INFO] [stderr]   Downloaded pear_codegen v0.1.2
[INFO] [stderr]   Downloaded unreachable v1.0.0
[INFO] [stderr]   Downloaded rocket_http v0.4.0-rc.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded fsevent v0.2.17
[INFO] [stderr]   Downloaded slab v0.4.1
[INFO] [stderr]   Downloaded safemem v0.3.0
[INFO] [stderr]   Downloaded typeable v0.1.2
[INFO] [stderr]   Downloaded pear v0.1.2
[INFO] [stderr]   Downloaded toml v0.4.9
[INFO] [stderr]   Downloaded yansi v0.4.0
[INFO] [stderr]   Downloaded time v0.1.40
[INFO] [stderr]   Downloaded backtrace-sys v0.1.24
[INFO] [stderr]   Downloaded glob v0.2.11
[INFO] [stderr]   Downloaded humansize v1.1.0
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded chrono v0.4.6
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[INFO] [stderr]   Downloaded redox_syscall v0.1.42
[INFO] [stderr]   Downloaded cc v1.0.25
[INFO] [stderr]   Downloaded byte-tools v0.2.0
[INFO] [stderr]   Downloaded typenum v1.10.0
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[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded state v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14746d372b29f4ca9419b16b50b6b75b8abca496c5f00d4fdf55f58d53bd6668
[INFO] running `Command { std: "docker" "start" "-a" "14746d372b29f4ca9419b16b50b6b75b8abca496c5f00d4fdf55f58d53bd6668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14746d372b29f4ca9419b16b50b6b75b8abca496c5f00d4fdf55f58d53bd6668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14746d372b29f4ca9419b16b50b6b75b8abca496c5f00d4fdf55f58d53bd6668", kill_on_drop: false }`
[INFO] [stdout] 14746d372b29f4ca9419b16b50b6b75b8abca496c5f00d4fdf55f58d53bd6668
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c36b2a2c0e4871bb9e1186055d17607c58919174548e66356a9e71d281f915f
[INFO] running `Command { std: "docker" "start" "-a" "0c36b2a2c0e4871bb9e1186055d17607c58919174548e66356a9e71d281f915f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling smallvec v0.6.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling pear_codegen v0.1.2
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.2`
[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/pear_codegen-28665552d149cbe3/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Pear requires a nightly or dev version of Rust.
[INFO] [stderr]   Installed version is: 1.90.0 (2025-09-14). Minimum required: 1.31.0-nightly (2018-10-05).
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pear_codegen-0.1.2/build.rs:31:13:
[INFO] [stderr]   Aborting compilation due to incompatible compiler.
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x63eeaedb9f32 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x63eeaedb9f32 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x63eeaedb9f32 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x63eeaedb9f32 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x63eeaedd9873 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x63eeaedd9873 - core::fmt::write::h8a494366950f23bb
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x63eeaedb7813 - std::io::default_write_fmt::ha27fbccbc65eb6fa
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x63eeaedb7813 - std::io::Write::write_fmt::h6556609fca33d0b1
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x63eeaedb9d82 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x63eeaedbae23 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x63eeaedbac05 - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x63eeaedbb7f5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x63eeaedbb6cc - std::panicking::begin_panic::{{closure}}::h9f4a5adc680e21fa
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:770:9
[INFO] [stderr]     13:     0x63eeaedba429 - std::sys::backtrace::__rust_end_short_backtrace::hb5f90b203e68dc50
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x63eeaedbb5e2 - std::panicking::begin_panic::h5128ce11a6f84a23
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:769:5
[INFO] [stderr]     15:     0x63eeaed835ff - build_script_build::main::haf4d982bc5a0c1c2
[INFO] [stderr]     16:     0x63eeaed82673 - core::ops::function::FnOnce::call_once::h3fe45ca3c35f8f7b
[INFO] [stderr]     17:     0x63eeaed824f6 - std::sys::backtrace::__rust_begin_short_backtrace::h05671d53fe73b9b4
[INFO] [stderr]     18:     0x63eeaed824d9 - std::rt::lang_start::{{closure}}::h0bed7b7ac384540e
[INFO] [stderr]     19:     0x63eeaedb3ea0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     20:     0x63eeaedb3ea0 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stderr]     21:     0x63eeaedb3ea0 - std::panicking::catch_unwind::h50591d85bf847c7c
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stderr]     22:     0x63eeaedb3ea0 - std::panic::catch_unwind::h2487b4c4f2ae22c6
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stderr]     23:     0x63eeaedb3ea0 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24
[INFO] [stderr]     24:     0x63eeaedb3ea0 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x63eeaedb3ea0 - std::panicking::catch_unwind::hf9a822ea043fb0d6
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x63eeaedb3ea0 - std::panic::catch_unwind::h5b3cac802237ed89
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x63eeaedb3ea0 - std::rt::lang_start_internal::h34f9328d113fd60a
[INFO] [stderr]                                  at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5
[INFO] [stderr]     28:     0x63eeaed824c1 - std::rt::lang_start::h7379a9429353c1fc
[INFO] [stderr]     29:     0x63eeaed83fb5 - main
[INFO] [stderr]     30:     0x7c536e2f81ca - <unknown>
[INFO] [stderr]     31:     0x7c536e2f828b - __libc_start_main
[INFO] [stderr]     32:     0x63eeaed823d5 - _start
[INFO] [stderr]     33:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0c36b2a2c0e4871bb9e1186055d17607c58919174548e66356a9e71d281f915f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c36b2a2c0e4871bb9e1186055d17607c58919174548e66356a9e71d281f915f", kill_on_drop: false }`
[INFO] [stdout] 0c36b2a2c0e4871bb9e1186055d17607c58919174548e66356a9e71d281f915f
