[INFO] fetching crate dusk-consensus 0.1.0...
[INFO] checking dusk-consensus-0.1.0 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate dusk-consensus 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate dusk-consensus 0.1.0 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate dusk-consensus 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate dusk-consensus 0.1.0
[INFO] tweaked toml for crates.io crate dusk-consensus 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate dusk-consensus 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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.148
[INFO] [stderr]   Downloaded libmath v0.2.1
[INFO] [stderr]   Downloaded keccak v0.1.3
[INFO] [stderr]   Downloaded rustc_tools_util v0.2.1
[INFO] [stderr]   Downloaded derive-hex v0.1.2
[INFO] [stderr]   Downloaded dusk-bls12_381-sign v0.3.0-rc.0
[INFO] [stderr]   Downloaded konst_proc_macros v0.2.11
[INFO] [stderr]   Downloaded dusk-bytes v0.1.6
[INFO] [stderr]   Downloaded constant_time_eq v0.2.4
[INFO] [stderr]   Downloaded bytes v0.6.0
[INFO] [stderr]   Downloaded blake2 v0.10.5
[INFO] [stderr]   Downloaded raptorq v1.7.0
[INFO] [stderr]   Downloaded blake2 v0.9.2
[INFO] [stderr]   Downloaded dusk-bls12_381 v0.9.0
[INFO] [stderr]   Downloaded tokio v1.22.0
[INFO] [stderr]   Downloaded serde v1.0.148
[INFO] [stderr]   Downloaded sha3 v0.10.6
[INFO] [stderr]   Downloaded kadcast v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 659dc1a09d5727fd1c21256627ef424fbe27e45eb37f8f2524508be609da54e4
[INFO] running `Command { std: "docker" "start" "-a" "659dc1a09d5727fd1c21256627ef424fbe27e45eb37f8f2524508be609da54e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "659dc1a09d5727fd1c21256627ef424fbe27e45eb37f8f2524508be609da54e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659dc1a09d5727fd1c21256627ef424fbe27e45eb37f8f2524508be609da54e4", kill_on_drop: false }`
[INFO] [stdout] 659dc1a09d5727fd1c21256627ef424fbe27e45eb37f8f2524508be609da54e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c474aa2cc872a72be7fb49238bfc15d31959c914d10bc3faa59649ecb53141a
[INFO] running `Command { std: "docker" "start" "-a" "6c474aa2cc872a72be7fb49238bfc15d31959c914d10bc3faa59649ecb53141a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.104
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.148
[INFO] [stderr]    Compiling serde v1.0.148
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling tokio v1.22.0
[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 futures-core v0.3.25
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[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] 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" "6c474aa2cc872a72be7fb49238bfc15d31959c914d10bc3faa59649ecb53141a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c474aa2cc872a72be7fb49238bfc15d31959c914d10bc3faa59649ecb53141a", kill_on_drop: false }`
[INFO] [stdout] 6c474aa2cc872a72be7fb49238bfc15d31959c914d10bc3faa59649ecb53141a
[INFO] checking dusk-consensus-0.1.0 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate dusk-consensus 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate dusk-consensus 0.1.0 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate dusk-consensus 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate dusk-consensus 0.1.0
[INFO] tweaked toml for crates.io crate dusk-consensus 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate dusk-consensus 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" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90c3060a8e4a8ad24f5a4a0b2a422b22763d1eb7058d5e9914a0bccca014a0ba
[INFO] running `Command { std: "docker" "start" "-a" "90c3060a8e4a8ad24f5a4a0b2a422b22763d1eb7058d5e9914a0bccca014a0ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90c3060a8e4a8ad24f5a4a0b2a422b22763d1eb7058d5e9914a0bccca014a0ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c3060a8e4a8ad24f5a4a0b2a422b22763d1eb7058d5e9914a0bccca014a0ba", kill_on_drop: false }`
[INFO] [stdout] 90c3060a8e4a8ad24f5a4a0b2a422b22763d1eb7058d5e9914a0bccca014a0ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed94d890ca13a1b062c396d45b1506db22108d6790042ba1e4c73ea154165fd0
[INFO] running `Command { std: "docker" "start" "-a" "ed94d890ca13a1b062c396d45b1506db22108d6790042ba1e4c73ea154165fd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.104
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.148
[INFO] [stderr]    Compiling serde v1.0.148
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[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 tokio v1.22.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[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] 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" "ed94d890ca13a1b062c396d45b1506db22108d6790042ba1e4c73ea154165fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed94d890ca13a1b062c396d45b1506db22108d6790042ba1e4c73ea154165fd0", kill_on_drop: false }`
[INFO] [stdout] ed94d890ca13a1b062c396d45b1506db22108d6790042ba1e4c73ea154165fd0
