[INFO] fetching crate hemlock_lib 0.1.0...
[INFO] checking hemlock_lib-0.1.0 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate hemlock_lib 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate hemlock_lib 0.1.0
[INFO] finished tweaking crates.io crate hemlock_lib 0.1.0
[INFO] tweaked toml for crates.io crate hemlock_lib 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hemlock_lib 0.1.0 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 241 packages to latest compatible versions
[INFO] [stderr]       Adding crc v3.3.0 (available: v3.4.0)
[INFO] [stderr]       Adding crc-fast v1.9.0 (available: v1.10.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afdcf75e2f0bd5218e3447f35429e174f74d6c7d86ec43078da8503537d40018
[INFO] running `Command { std: "docker" "start" "-a" "afdcf75e2f0bd5218e3447f35429e174f74d6c7d86ec43078da8503537d40018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afdcf75e2f0bd5218e3447f35429e174f74d6c7d86ec43078da8503537d40018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afdcf75e2f0bd5218e3447f35429e174f74d6c7d86ec43078da8503537d40018", kill_on_drop: false }`
[INFO] [stdout] afdcf75e2f0bd5218e3447f35429e174f74d6c7d86ec43078da8503537d40018
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a40ded72bc2e144cde9e2e064e7bc059364bb0d57902a6e24ca859f97f8580b
[INFO] running `Command { std: "docker" "start" "-a" "9a40ded72bc2e144cde9e2e064e7bc059364bb0d57902a6e24ca859f97f8580b", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking socket2 v0.6.3
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking http v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]     Checking futures-task v0.3.32
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking time v0.3.47
[INFO] [stderr]     Checking bytes-utils v0.1.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking tokio v1.50.0
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.57
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]    Compiling aws-lc-rs v1.16.2
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stderr]     Checking rustls-pki-types v1.14.0
[INFO] [stderr]     Checking base64ct v1.8.3
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]     Checking crypto-bigint v0.4.9
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking rustls-native-certs v0.8.3
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking signature v1.6.4
[INFO] [stderr]     Checking tower v0.5.3
[INFO] [stderr]     Checking indexmap v2.13.0
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]    Compiling aws-types v1.3.14
[INFO] [stderr]     Checking sec1 v0.3.0
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking uuid v1.22.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking regex-lite v0.1.9
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]     Checking elliptic-curve v0.12.3
[INFO] [stderr]     Checking rfc6979 v0.3.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking ecdsa v0.14.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking p256 v0.11.1
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling aws-lc-sys v0.39.0
[INFO] [stderr]     Checking aws-smithy-xml v0.60.15
[INFO] [stderr]     Checking crc v3.3.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling pqc_kyber v0.7.1
[INFO] [stderr]     Checking urlencoding v2.1.3
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking crc-fast v1.9.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking lru v0.16.3
[INFO] [stderr]     Checking algebra_kit v0.1.15
[INFO] [stderr]     Checking matrix_kit v0.1.9
[INFO] [stderr]     Checking sylvan_number v0.1.5
[INFO] [stdout] error[E0635]: unknown feature `bigint_helper_methods`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/sylvan_number-0.1.5/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bigint_helper_methods)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sylvan_number` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9a40ded72bc2e144cde9e2e064e7bc059364bb0d57902a6e24ca859f97f8580b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a40ded72bc2e144cde9e2e064e7bc059364bb0d57902a6e24ca859f97f8580b", kill_on_drop: false }`
[INFO] [stdout] 9a40ded72bc2e144cde9e2e064e7bc059364bb0d57902a6e24ca859f97f8580b