[INFO] fetching crate hemlock_lib 0.1.0...
[INFO] testing hemlock_lib-0.1.0 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate hemlock_lib 0.1.0 into /workspace/builds/worker-5-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-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hemlock_lib 0.1.0 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a5fe3cc54abc24b01c21b4a9ca782d67aea06318153685b24c30b376aa0ba66
[INFO] running `Command { std: "docker" "start" "-a" "1a5fe3cc54abc24b01c21b4a9ca782d67aea06318153685b24c30b376aa0ba66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a5fe3cc54abc24b01c21b4a9ca782d67aea06318153685b24c30b376aa0ba66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a5fe3cc54abc24b01c21b4a9ca782d67aea06318153685b24c30b376aa0ba66", kill_on_drop: false }`
[INFO] [stdout] 1a5fe3cc54abc24b01c21b4a9ca782d67aea06318153685b24c30b376aa0ba66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e620167145811fd55d6c82be7edfa1f1ba4993c91b890cdfaac4edd02aeea603
[INFO] running `Command { std: "docker" "start" "-a" "e620167145811fd55d6c82be7edfa1f1ba4993c91b890cdfaac4edd02aeea603", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
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[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling lock_api v0.4.14
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[INFO] [stderr]    Compiling num v0.4.3
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[INFO] [stderr]    Compiling rustls-webpki v0.101.7
[INFO] [stderr]    Compiling sct v0.7.1
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling yoke v0.8.1
[INFO] [stderr]    Compiling zerovec v0.11.5
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]    Compiling algebra_kit v0.1.15
[INFO] [stderr]    Compiling matrix_kit v0.1.9
[INFO] [stderr]    Compiling 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" "e620167145811fd55d6c82be7edfa1f1ba4993c91b890cdfaac4edd02aeea603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e620167145811fd55d6c82be7edfa1f1ba4993c91b890cdfaac4edd02aeea603", kill_on_drop: false }`
[INFO] [stdout] e620167145811fd55d6c82be7edfa1f1ba4993c91b890cdfaac4edd02aeea603
