[INFO] fetching crate writeup 1.0.2...
[INFO] testing writeup-1.0.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate writeup 1.0.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate writeup 1.0.2
[INFO] finished tweaking crates.io crate writeup 1.0.2
[INFO] tweaked toml for crates.io crate writeup 1.0.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate writeup 1.0.2 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 crates.io crate writeup 1.0.2 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7c84bb4b376ce9b7bf30e164d9b695a75ebdf383c9f29c99b95babc99e767547
[INFO] running `Command { std: "docker" "start" "-a" "7c84bb4b376ce9b7bf30e164d9b695a75ebdf383c9f29c99b95babc99e767547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c84bb4b376ce9b7bf30e164d9b695a75ebdf383c9f29c99b95babc99e767547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c84bb4b376ce9b7bf30e164d9b695a75ebdf383c9f29c99b95babc99e767547", kill_on_drop: false }`
[INFO] [stdout] 7c84bb4b376ce9b7bf30e164d9b695a75ebdf383c9f29c99b95babc99e767547
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5e92ee8451c89a3d0bc917a0fda0996401f4bb77e49720780713481681086338
[INFO] running `Command { std: "docker" "start" "-a" "5e92ee8451c89a3d0bc917a0fda0996401f4bb77e49720780713481681086338", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling runtime-fmt v0.4.1
[INFO] [stdout] error[E0432]: unresolved import `std::fmt::ArgumentV1`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 | use std::fmt::{self, Arguments, ArgumentV1};
[INFO] [stdout]    |                                 ^^^^^^^^^^ no `ArgumentV1` in `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]    |
[INFO] [stdout] 38 - use std::fmt::{self, Arguments, ArgumentV1};
[INFO] [stdout] 38 + use std::fmt::{self, Arguments, Arguments};
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::fmt::rt`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::fmt::rt::v1;
[INFO] [stdout]    |               ^^ could not find `rt` in `fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `ArgumentV1` in `fmt`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/erase.rs:54:48
[INFO] [stdout]    |
[INFO] [stdout] 54 |                               Some(f) => Ok(fmt::ArgumentV1::new(self, f)),
[INFO] [stdout]    |                                                  ^^^^^^^^^^ could not find `ArgumentV1` in `fmt`
[INFO] [stdout] ...
[INFO] [stdout] 85 | / traits! {
[INFO] [stdout] 86 | |     "", Display, display;
[INFO] [stdout] 87 | |     "?", Debug, debug;
[INFO] [stdout] 88 | |     "e", LowerExp, lower_exp;
[INFO] [stdout] ...  |
[INFO] [stdout] 94 | |     "X", UpperHex, upper_hex;
[INFO] [stdout] 95 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 54 -                             Some(f) => Ok(fmt::ArgumentV1::new(self, f)),
[INFO] [stdout] 54 +                             Some(f) => Ok(fmt::Arguments::new(self, f)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `ArgumentV1` in module `fmt`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/erase.rs:42:77
[INFO] [stdout]    |
[INFO] [stdout] 42 |               fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::ArgumentV1, Error<'n>>;
[INFO] [stdout]    |                                                                               ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 | / traits! {
[INFO] [stdout] 86 | |     "", Display, display;
[INFO] [stdout] 87 | |     "?", Debug, debug;
[INFO] [stdout] 88 | |     "e", LowerExp, lower_exp;
[INFO] [stdout] ...  |
[INFO] [stdout] 94 | |     "X", UpperHex, upper_hex;
[INFO] [stdout] 95 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:716:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named struct `Arguments` defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 42 -             fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::ArgumentV1, Error<'n>>;
[INFO] [stdout] 42 +             fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::Arguments, Error<'n>>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `ArgumentV1` in module `fmt`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/erase.rs:50:77
[INFO] [stdout]    |
[INFO] [stdout] 50 |               fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::ArgumentV1, Error<'n>> {
[INFO] [stdout]    |                                                                               ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 | / traits! {
[INFO] [stdout] 86 | |     "", Display, display;
[INFO] [stdout] 87 | |     "?", Debug, debug;
[INFO] [stdout] 88 | |     "e", LowerExp, lower_exp;
[INFO] [stdout] ...  |
[INFO] [stdout] 94 | |     "X", UpperHex, upper_hex;
[INFO] [stdout] 95 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:716:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named struct `Arguments` defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 50 -             fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::ArgumentV1, Error<'n>> {
[INFO] [stdout] 50 +             fn by_name<'n>(&self, name: &'n str, idx: usize) -> Result<fmt::Arguments, Error<'n>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(fmt_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `new_v1_formatted` found for struct `Arguments<'a>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:200:41
[INFO] [stdout]     |
[INFO] [stdout] 200 |             Some(ref fmt) => Arguments::new_v1_formatted(&pieces, &args, fmt),
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^ associated function or constant not found in `Arguments<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Arguments<'_>` consider using one of the following associated functions:
[INFO] [stdout]       Arguments::<'a>::new
[INFO] [stdout]       Arguments::<'a>::from_str_nonconst
[INFO] [stdout]       Arguments::<'a>::from_str
[INFO] [stdout]    --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:729:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `new_v1` found for struct `Arguments<'a>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |             None => Arguments::new_v1(&pieces, &args),
[INFO] [stdout]     |                                ^^^^^^ associated function or constant not found in `Arguments<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Arguments<'_>` consider using one of the following associated functions:
[INFO] [stdout]       Arguments::<'a>::new
[INFO] [stdout]       Arguments::<'a>::from_str_nonconst
[INFO] [stdout]       Arguments::<'a>::from_str
[INFO] [stdout]    --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:729:4
[INFO] [stdout] help: there is an associated function `new` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 201 -             None => Arguments::new_v1(&pieces, &args),
[INFO] [stdout] 201 +             None => Arguments::new(&pieces, &args),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `new_v1_formatted` found for struct `Arguments<'a>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:267:41
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Some(ref fmt) => Arguments::new_v1_formatted(&pieces, &self.inner.args, fmt),
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^ associated function or constant not found in `Arguments<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Arguments<'_>` consider using one of the following associated functions:
[INFO] [stdout]       Arguments::<'a>::new
[INFO] [stdout]       Arguments::<'a>::from_str_nonconst
[INFO] [stdout]       Arguments::<'a>::from_str
[INFO] [stdout]    --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:729:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `new_v1` found for struct `Arguments<'a>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/runtime-fmt-0.4.1/src/lib.rs:268:32
[INFO] [stdout]     |
[INFO] [stdout] 268 |             None => Arguments::new_v1(&pieces, &self.inner.args),
[INFO] [stdout]     |                                ^^^^^^ associated function or constant not found in `Arguments<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Arguments<'_>` consider using one of the following associated functions:
[INFO] [stdout]       Arguments::<'a>::new
[INFO] [stdout]       Arguments::<'a>::from_str_nonconst
[INFO] [stdout]       Arguments::<'a>::from_str
[INFO] [stdout]    --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/mod.rs:729:4
[INFO] [stdout] help: there is an associated function `new` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 268 -             None => Arguments::new_v1(&pieces, &self.inner.args),
[INFO] [stdout] 268 +             None => Arguments::new(&pieces, &self.inner.args),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `runtime-fmt` (lib) due to 10 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5e92ee8451c89a3d0bc917a0fda0996401f4bb77e49720780713481681086338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e92ee8451c89a3d0bc917a0fda0996401f4bb77e49720780713481681086338", kill_on_drop: false }`
[INFO] [stdout] 5e92ee8451c89a3d0bc917a0fda0996401f4bb77e49720780713481681086338
