[INFO] cloning repository https://github.com/dinternet-computer/rust_hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dinternet-computer/rust_hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinternet-computer%2Frust_hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinternet-computer%2Frust_hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec119217fb8244a9bdff2806d37aa4dda18e76dd
[INFO] testing dinternet-computer/rust_hello 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%2Fdinternet-computer%2Frust_hello" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dinternet-computer/rust_hello
[INFO] finished tweaking git repo https://github.com/dinternet-computer/rust_hello
[INFO] tweaked toml for git repo https://github.com/dinternet-computer/rust_hello written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dinternet-computer/rust_hello 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/dinternet-computer/rust_hello 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: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/rafalh/rust-fatfs`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/paulyoung/icfs.git`
[INFO] [stderr]     Updating git repository `https://github.com/dfinity/cdk-rs.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing dinternet-computer/rust_hello 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%2Fdinternet-computer%2Frust_hello" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dinternet-computer/rust_hello
[INFO] finished tweaking git repo https://github.com/dinternet-computer/rust_hello
[INFO] tweaked toml for git repo https://github.com/dinternet-computer/rust_hello written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dinternet-computer/rust_hello 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/dinternet-computer/rust_hello 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: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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 time v0.3.9
[INFO] [stderr]   Downloaded quote v1.0.16
[INFO] [stderr]   Downloaded num_threads v0.1.5
[INFO] [stderr]   Downloaded ic-cdk v0.5.0
[INFO] [stderr]   Downloaded pico-args v0.4.2
[INFO] [stderr]   Downloaded fscommon v0.1.1
[INFO] [stderr]   Downloaded git-hash v0.9.2
[INFO] [stderr]   Downloaded candid_derive v0.4.5
[INFO] [stderr]   Downloaded binread v2.2.0
[INFO] [stderr]   Downloaded git-packetline v0.12.3
[INFO] [stderr]   Downloaded binread_derive v2.1.0
[INFO] [stderr]   Downloaded log v0.4.15
[INFO] [stderr]   Downloaded beef v0.5.1
[INFO] [stderr]   Downloaded candid v0.7.12
[INFO] [stderr]   Downloaded getrandom v0.2.5
[INFO] [stderr]   Downloaded syn v1.0.89
[INFO] [stderr]   Downloaded redox_syscall v0.2.11
[INFO] [stderr]   Downloaded rustversion v1.0.6
[INFO] [stderr]   Downloaded paste v1.0.6
[INFO] [stderr]   Downloaded lalrpop v0.19.7
[INFO] [stderr]   Downloaded serde_tokenstream v0.1.3
[INFO] [stderr]   Downloaded regex v1.5.5
[INFO] [stderr]   Downloaded ic-cdk-macros v0.5.0
[INFO] [stderr]   Downloaded ic-types v0.3.0
[INFO] [stderr]   Downloaded string_cache v0.8.3
[INFO] [stderr]   Downloaded redox_users v0.4.2
[INFO] [stderr]   Downloaded lalrpop-util v0.19.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c20a41b7d4be42b9144eacdb3e94e263d933e19fdf4e4bf820f5745988f9696e
[INFO] running `Command { std: "docker" "start" "-a" "c20a41b7d4be42b9144eacdb3e94e263d933e19fdf4e4bf820f5745988f9696e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c20a41b7d4be42b9144eacdb3e94e263d933e19fdf4e4bf820f5745988f9696e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c20a41b7d4be42b9144eacdb3e94e263d933e19fdf4e4bf820f5745988f9696e", kill_on_drop: false }`
[INFO] [stdout] c20a41b7d4be42b9144eacdb3e94e263d933e19fdf4e4bf820f5745988f9696e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e45b1269954e6bf671756626c8b494011cb7d2baec22779e7f3b89cff1731427
[INFO] running `Command { std: "docker" "start" "-a" "e45b1269954e6bf671756626c8b494011cb7d2baec22779e7f3b89cff1731427", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling cpufeatures v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling string_cache v0.8.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling pretty v0.10.0
[INFO] [stderr]    Compiling num_threads v0.1.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling time v0.3.9
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling git-hash v0.9.2
[INFO] [stderr]    Compiling fscommon v0.1.1
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling git-packetline v0.12.3
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling fatfs v0.4.0 (https://github.com/rafalh/rust-fatfs?rev=87fc1ed5074a32b4e0344fcdde77359ef9e75432#87fc1ed5)
[INFO] [stderr]    Compiling lalrpop-util v0.19.7
[INFO] [stderr]    Compiling lalrpop v0.19.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling binread_derive v2.1.0
[INFO] [stderr]    Compiling candid_derive v0.4.5
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling logos v0.12.0
[INFO] [stderr]    Compiling binread v2.2.0
[INFO] [stderr]    Compiling candid v0.7.12
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling serde_tokenstream v0.1.3
[INFO] [stderr]    Compiling ic-types v0.3.0
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]    Compiling num_enum v0.5.7
[INFO] [stderr]    Compiling ic-cdk v0.5.0
[INFO] [stderr]    Compiling ic-cdk v0.4.0 (https://github.com/dfinity/cdk-rs.git?rev=a253119adb08929b6304d007ee0a6a37960656ed#a253119a)
[INFO] [stderr]    Compiling icfs v0.1.0 (https://github.com/paulyoung/icfs.git#897e5a99)
[INFO] [stderr]    Compiling icfs_fatfs v0.1.0 (/opt/rustwide/workdir/src/icfs_fatfs)
[INFO] [stderr]    Compiling ic-cdk-macros v0.5.0
[INFO] [stdout] error[E0433]: cannot find `ReadBuf` in `io`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/icfs-225ec89875773a67/897e5a9/crates/icfs/internal.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut read_buf = std::io::ReadBuf::uninit(buf.spare_capacity_mut());
[INFO] [stdout]    |                                     ^^^^^^^ could not find `ReadBuf` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/icfs-225ec89875773a67/897e5a9/crates/icfs/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(read_buf)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `icfs` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e45b1269954e6bf671756626c8b494011cb7d2baec22779e7f3b89cff1731427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e45b1269954e6bf671756626c8b494011cb7d2baec22779e7f3b89cff1731427", kill_on_drop: false }`
[INFO] [stdout] e45b1269954e6bf671756626c8b494011cb7d2baec22779e7f3b89cff1731427