[INFO] fetching crate flexon 0.4.2...
[INFO] testing flexon-0.4.2 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate flexon 0.4.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate flexon 0.4.2
[INFO] finished tweaking crates.io crate flexon 0.4.2
[INFO] tweaked toml for crates.io crate flexon 0.4.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flexon 0.4.2 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flexon 0.4.2 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-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eda47c6ac8b73d2313dcdede4414de7ace23d7e6170d25b6c9e7f86b3e5beaa3
[INFO] running `Command { std: "docker" "start" "-a" "eda47c6ac8b73d2313dcdede4414de7ace23d7e6170d25b6c9e7f86b3e5beaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eda47c6ac8b73d2313dcdede4414de7ace23d7e6170d25b6c9e7f86b3e5beaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eda47c6ac8b73d2313dcdede4414de7ace23d7e6170d25b6c9e7f86b3e5beaa3", kill_on_drop: false }`
[INFO] [stdout] eda47c6ac8b73d2313dcdede4414de7ace23d7e6170d25b6c9e7f86b3e5beaa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebc9332b7a1bcaf9c6e288e1da87af18ae0cfbf05b125468d96d05faafc8177a
[INFO] running `Command { std: "docker" "start" "-a" "ebc9332b7a1bcaf9c6e288e1da87af18ae0cfbf05b125468d96d05faafc8177a", kill_on_drop: false }`
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling flexon v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "ebc9332b7a1bcaf9c6e288e1da87af18ae0cfbf05b125468d96d05faafc8177a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc9332b7a1bcaf9c6e288e1da87af18ae0cfbf05b125468d96d05faafc8177a", kill_on_drop: false }`
[INFO] [stdout] ebc9332b7a1bcaf9c6e288e1da87af18ae0cfbf05b125468d96d05faafc8177a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97d2e94ce35180871c6158dfcb9008ee747751c092c11e63872503bb9461d66c
[INFO] running `Command { std: "docker" "start" "-a" "97d2e94ce35180871c6158dfcb9008ee747751c092c11e63872503bb9461d66c", kill_on_drop: false }`
[INFO] [stderr]    Compiling flexon v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "97d2e94ce35180871c6158dfcb9008ee747751c092c11e63872503bb9461d66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d2e94ce35180871c6158dfcb9008ee747751c092c11e63872503bb9461d66c", kill_on_drop: false }`
[INFO] [stdout] 97d2e94ce35180871c6158dfcb9008ee747751c092c11e63872503bb9461d66c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 79c48a7d1da804189a551cb1c6f66ab2cb7e9f77cb279ca7d33a21fbd9212b4f
[INFO] running `Command { std: "docker" "start" "-a" "79c48a7d1da804189a551cb1c6f66ab2cb7e9f77cb279ca7d33a21fbd9212b4f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flexon-e5de62ef915969fc)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests flexon
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/serde/mod.rs - serde::from_reader (line 1178) - compile ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S>::new (line 1035) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::parse (line 124) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::parse_unchecked (line 154) ... ok
[INFO] [stdout] test src/serde/mod.rs - serde::from_str (line 1082) ... FAILED
[INFO] [stdout] test src/serde/mod.rs - serde::from_mut_str (line 1108) ... ok
[INFO] [stdout] test src/serde/mod.rs - serde::get_from_unchecked (line 1286) ... ok
[INFO] [stdout] test src/pointer.rs - pointer::jsonp (line 78) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::new_with (line 50) ... ok
[INFO] [stdout] test src/lib.rs - parse (line 50) ... ok
[INFO] [stdout] test src/serde/mod.rs - serde::get_with_parser (line 1205) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::parse_at_unchecked (line 249) ... ok
[INFO] [stdout] test src/serde/mod.rs - serde::get_from (line 1255) ... ok
[INFO] [stdout] test src/value/borrowed/mod.rs - value::borrowed::Value<'a>::pointer (line 170) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::with_config (line 96) ... ok
[INFO] [stdout] test src/lib.rs - parse_at (line 68) ... ok
[INFO] [stdout] test src/parser/mod.rs - parser::Parser<'a,S,C>::parse_at (line 187) ... ok
[INFO] [stdout] test src/value/lazy/mod.rs - value::lazy::Value<'a>::pointer (line 303) ... ok
[INFO] [stdout] test src/value/owned/mod.rs - value::owned::Value::pointer (line 167) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/serde/mod.rs - serde::from_str (line 1082) stdout ----
[INFO] [stdout] error: cannot find derive macro `Deserialize` in this scope
[INFO] [stdout]     --> src/serde/mod.rs:1086:10
[INFO] [stdout]      |
[INFO] [stdout] 1086 | #[derive(Deserialize)]
[INFO] [stdout]      |          ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: `Deserialize` is imported here, but it is only a trait, without a derive macro
[INFO] [stdout]     --> src/serde/mod.rs:1084:5
[INFO] [stdout]      |
[INFO] [stdout] 1084 | use serde::Deserialize;
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Book: serde::Deserialize<'de>` is not satisfied
[INFO] [stdout]     --> src/serde/mod.rs:1093:18
[INFO] [stdout]      |
[INFO] [stdout] 1093 | let book: Book = flexon::from_str(json)?;
[INFO] [stdout]      |                  ^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]      |
[INFO] [stdout] help: the trait `Deserialize<'_>` is not implemented for `Book`
[INFO] [stdout]     --> src/serde/mod.rs:1087:1
[INFO] [stdout]      |
[INFO] [stdout] 1087 | struct Book {
[INFO] [stdout]      | ^^^^^^^^^^^
[INFO] [stdout]      = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `Book` type
[INFO] [stdout]      = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]      = help: the following other types implement trait `Deserialize<'de>`:
[INFO] [stdout]                &'a Path
[INFO] [stdout]                &'a [u8]
[INFO] [stdout]                &'a str
[INFO] [stdout]                ()
[INFO] [stdout]                (T,)
[INFO] [stdout]                (T0, T1)
[INFO] [stdout]                (T0, T1, T2)
[INFO] [stdout]                (T0, T1, T2, T3)
[INFO] [stdout]              and 138 others
[INFO] [stdout] note: required by a bound in `flexon::from_str`
[INFO] [stdout]     --> src/serde/mod.rs:1096:24
[INFO] [stdout]      |
[INFO] [stdout] 1096 | pub fn from_str<'a, T: Deserialize<'a>>(s: &'a str) -> Result<T> {
[INFO] [stdout]      |                        ^^^^^^^^^^^^^^^ required by this bound in `from_str`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/serde/mod.rs - serde::from_str (line 1082)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 18 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.91s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 2.07s; merged doctests compilation took 0.15s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "79c48a7d1da804189a551cb1c6f66ab2cb7e9f77cb279ca7d33a21fbd9212b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79c48a7d1da804189a551cb1c6f66ab2cb7e9f77cb279ca7d33a21fbd9212b4f", kill_on_drop: false }`
[INFO] [stdout] 79c48a7d1da804189a551cb1c6f66ab2cb7e9f77cb279ca7d33a21fbd9212b4f
