[INFO] fetching crate kzen-paillier 0.4.3...
[INFO] checking kzen-paillier-0.4.3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate kzen-paillier 0.4.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate kzen-paillier 0.4.3 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kzen-paillier 0.4.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kzen-paillier 0.4.3
[INFO] tweaked toml for crates.io crate kzen-paillier 0.4.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate kzen-paillier 0.4.3 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.14.0
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded serde v1.0.150
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded rand_xorshift v0.2.0
[INFO] [stderr]   Downloaded crypto-mac v0.11.1
[INFO] [stderr]   Downloaded ff-zeroize v0.6.3
[INFO] [stderr]   Downloaded merkle-cbt v0.3.2
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded p256 v0.11.1
[INFO] [stderr]   Downloaded secp256k1 v0.20.3
[INFO] [stderr]   Downloaded serde_derive v1.0.150
[INFO] [stderr]   Downloaded cryptoxide v0.1.3
[INFO] [stderr]   Downloaded ff_derive-zeroize v0.6.2
[INFO] [stderr]   Downloaded serde_json v1.0.89
[INFO] [stderr]   Downloaded rust-gmp-kzen v0.5.1
[INFO] [stderr]   Downloaded sha2 v0.8.2
[INFO] [stderr]   Downloaded hmac v0.11.0
[INFO] [stderr]   Downloaded serde_bytes v0.11.7
[INFO] [stderr]   Downloaded syn v1.0.105
[INFO] [stderr]   Downloaded secp256k1-sys v0.4.2
[INFO] [stderr]   Downloaded curv-kzen v0.10.0
[INFO] [stderr]   Downloaded pairing-plus v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04c02f27673efc3a77be6f773a17a3d8455e7fcdd02f6b8cd5a8ad7385525033
[INFO] running `Command { std: "docker" "start" "-a" "04c02f27673efc3a77be6f773a17a3d8455e7fcdd02f6b8cd5a8ad7385525033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04c02f27673efc3a77be6f773a17a3d8455e7fcdd02f6b8cd5a8ad7385525033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c02f27673efc3a77be6f773a17a3d8455e7fcdd02f6b8cd5a8ad7385525033", kill_on_drop: false }`
[INFO] [stdout] 04c02f27673efc3a77be6f773a17a3d8455e7fcdd02f6b8cd5a8ad7385525033
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5210e220151d651daff5b5fd02d770ebe493ed041b9ceb5b76717b08cf7e9b0
[INFO] running `Command { std: "docker" "start" "-a" "d5210e220151d651daff5b5fd02d770ebe493ed041b9ceb5b76717b08cf7e9b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.150
[INFO] [stderr]     Checking const-oid v0.9.1
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]     Checking base64ct v1.5.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking keccak v0.1.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking merkle-cbt v0.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cryptoxide v0.1.3
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d5210e220151d651daff5b5fd02d770ebe493ed041b9ceb5b76717b08cf7e9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5210e220151d651daff5b5fd02d770ebe493ed041b9ceb5b76717b08cf7e9b0", kill_on_drop: false }`
[INFO] [stdout] d5210e220151d651daff5b5fd02d770ebe493ed041b9ceb5b76717b08cf7e9b0