[INFO] cloning repository https://github.com/prabal-banerjee/miden-balance-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prabal-banerjee/miden-balance-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprabal-banerjee%2Fmiden-balance-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprabal-banerjee%2Fmiden-balance-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 109ce1917394b689edebaf4c72b6786c1fb930b5
[INFO] testing prabal-banerjee/miden-balance-example against beta-2026-04-21 for beta-1.96-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprabal-banerjee%2Fmiden-balance-example" "/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/prabal-banerjee/miden-balance-example
[INFO] finished tweaking git repo https://github.com/prabal-banerjee/miden-balance-example
[INFO] tweaked toml for git repo https://github.com/prabal-banerjee/miden-balance-example written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prabal-banerjee/miden-balance-example 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/prabal-banerjee/miden-balance-example 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/0xPolygonMiden/miden-vm`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miden-core v0.3.0
[INFO] [stderr]   Downloaded winter-math v0.4.2
[INFO] [stderr]   Downloaded constant_time_eq v0.2.5
[INFO] [stderr]   Downloaded winter-verifier v0.4.2
[INFO] [stderr]   Downloaded winter-utils v0.4.2
[INFO] [stderr]   Downloaded toml_datetime v0.6.1
[INFO] [stderr]   Downloaded winter-crypto v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded winter-air v0.4.2
[INFO] [stderr]   Downloaded winter-prover v0.4.2
[INFO] [stderr]   Downloaded toml_edit v0.19.7
[INFO] [stderr]   Downloaded winnow v0.3.6
[INFO] [stderr]   Downloaded winter-fri v0.4.2
[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] 7a847b4cd30aa2cee2801ac143d897287ba5ff1ec27f407d96b52639b24dc0a5
[INFO] running `Command { std: "docker" "start" "-a" "7a847b4cd30aa2cee2801ac143d897287ba5ff1ec27f407d96b52639b24dc0a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a847b4cd30aa2cee2801ac143d897287ba5ff1ec27f407d96b52639b24dc0a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a847b4cd30aa2cee2801ac143d897287ba5ff1ec27f407d96b52639b24dc0a5", kill_on_drop: false }`
[INFO] [stdout] 7a847b4cd30aa2cee2801ac143d897287ba5ff1ec27f407d96b52639b24dc0a5
[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] d2ac91f406cd2850426723e5f15935d9b3186f539c30c70d89edc2d786ee147a
[INFO] running `Command { std: "docker" "start" "-a" "d2ac91f406cd2850426723e5f15935d9b3186f539c30c70d89edc2d786ee147a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling constant_time_eq v0.2.5
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling winter-utils v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling winnow v0.3.6
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling winter-math v0.4.2
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling sha3 v0.10.6
[INFO] [stderr]    Compiling blake3 v1.3.3
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling winter-crypto v0.4.2
[INFO] [stderr]    Compiling miden-core v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling winter-fri v0.4.2
[INFO] [stderr]    Compiling miden-core v0.3.0
[INFO] [stderr]    Compiling toml_edit v0.19.7
[INFO] [stderr]    Compiling winter-air v0.4.2
[INFO] [stderr]    Compiling miden-air v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling winter-prover v0.4.2
[INFO] [stderr]    Compiling winter-verifier v0.4.2
[INFO] [stderr]    Compiling miden-processor v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling miden-prover v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr]    Compiling miden-assembly v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling miden-verifier v0.3.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr]    Compiling miden-stdlib v0.2.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)
[INFO] [stderr] error: failed to run custom build command for `miden-stdlib v0.2.0 (https://github.com/0xPolygonMiden/miden-vm?tag=v0.3.0#1b3549c4)`
[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/miden-stdlib-f6fae5140f56992f/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=asm
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d2ac91f406cd2850426723e5f15935d9b3186f539c30c70d89edc2d786ee147a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2ac91f406cd2850426723e5f15935d9b3186f539c30c70d89edc2d786ee147a", kill_on_drop: false }`
[INFO] [stdout] d2ac91f406cd2850426723e5f15935d9b3186f539c30c70d89edc2d786ee147a