[INFO] fetching crate mcp-hub 0.1.0...
[INFO] checking mcp-hub-0.1.0 against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] extracting crate mcp-hub 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mcp-hub 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mcp-hub 0.1.0
[INFO] tweaked toml for crates.io crate mcp-hub 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-hub 0.1.0 on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcp-hub 0.1.0 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8c26b012e79317f070e79a034184a4086c49bc12598fe88369c6aadada29301
[INFO] running `Command { std: "docker" "start" "-a" "f8c26b012e79317f070e79a034184a4086c49bc12598fe88369c6aadada29301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8c26b012e79317f070e79a034184a4086c49bc12598fe88369c6aadada29301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c26b012e79317f070e79a034184a4086c49bc12598fe88369c6aadada29301", kill_on_drop: false }`
[INFO] [stdout] f8c26b012e79317f070e79a034184a4086c49bc12598fe88369c6aadada29301
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3917a52444667b6c925f98f44ed79a2539d618d8694ec55f31001b586ae48ed2
[INFO] running `Command { std: "docker" "start" "-a" "3917a52444667b6c925f98f44ed79a2539d618d8694ec55f31001b586ae48ed2", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking foldhash v0.1.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]     Checking matchit v0.7.3
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]    Compiling prost-derive v0.13.5
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking async-stream v0.3.6
[INFO] [stderr]     Checking flate2 v1.1.2
[INFO] [stderr]     Checking indexmap v2.10.0
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking raw-cpuid v11.5.0
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking winnow v0.7.11
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking hdrhistogram v7.5.4
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking inotify v0.11.0
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking rand v0.9.1
[INFO] [stderr]     Checking metrics v0.24.2
[INFO] [stderr]    Compiling schemars_derive v0.8.22
[INFO] [stderr]     Checking quanta v0.12.6
[INFO] [stderr]     Checking rand_xoshiro v0.7.0
[INFO] [stderr]     Checking ordered-float v4.6.0
[INFO] [stderr]     Checking filetime v0.2.25
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling rmcp-macros v0.1.5
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]     Checking sketches-ddsketch v0.3.0
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.43
[INFO] [stderr]     Checking humantime v2.2.0
[INFO] [stderr]     Checking notify-types v2.0.0
[INFO] [stderr]     Checking shellexpand v3.1.1
[INFO] [stderr]     Checking failsafe v1.3.0
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking notify v8.0.0
[INFO] [stderr]     Checking metrics-util v0.20.0
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shellexpand-3.1.1/src/funcs.rs:395:21
[INFO] [stdout]     |
[INFO] [stdout] 394 |                 let var_name = match var_name.as_str() {
[INFO] [stdout]     |                                      ----------------- this expression has type `&str`
[INFO] [stdout] 395 |                     Some(var_name) => var_name,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^ expected `str`, found `Option<_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `str`
[INFO] [stdout]                found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shellexpand-3.1.1/src/funcs.rs:397:21
[INFO] [stdout]     |
[INFO] [stdout] 394 |                 let var_name = match var_name.as_str() {
[INFO] [stdout]     |                                      ----------------- this expression has type `&str`
[INFO] [stdout] ...
[INFO] [stdout] 397 |                     None => return Ok(None),
[INFO] [stdout]     |                     ^^^^ expected `str`, found `Option<_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `str`
[INFO] [stdout]                found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking predicates-core v1.0.9
[INFO] [stderr]     Checking metrics-exporter-log v0.4.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shellexpand` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3917a52444667b6c925f98f44ed79a2539d618d8694ec55f31001b586ae48ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3917a52444667b6c925f98f44ed79a2539d618d8694ec55f31001b586ae48ed2", kill_on_drop: false }`
[INFO] [stdout] 3917a52444667b6c925f98f44ed79a2539d618d8694ec55f31001b586ae48ed2