[INFO] fetching crate tc-block-builder 0.8.0...
[INFO] testing tc-block-builder-0.8.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate tc-block-builder 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tc-block-builder 0.8.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tc-block-builder 0.8.0
[INFO] finished tweaking crates.io crate tc-block-builder 0.8.0
[INFO] tweaked toml for crates.io crate tc-block-builder 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f7f5a418180dc44596a1d1dde0b62b249b094b504c32a4f5ff3cae3289e5f0
[INFO] running `Command { std: "docker" "start" "-a" "f1f7f5a418180dc44596a1d1dde0b62b249b094b504c32a4f5ff3cae3289e5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f7f5a418180dc44596a1d1dde0b62b249b094b504c32a4f5ff3cae3289e5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f7f5a418180dc44596a1d1dde0b62b249b094b504c32a4f5ff3cae3289e5f0", kill_on_drop: false }`
[INFO] [stdout] f1f7f5a418180dc44596a1d1dde0b62b249b094b504c32a4f5ff3cae3289e5f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 297dabc207ab9da697b49beeed5a4b885507bd94f033e5c950347257a2070e3c
[INFO] running `Command { std: "docker" "start" "-a" "297dabc207ab9da697b49beeed5a4b885507bd94f033e5c950347257a2070e3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling dyn-clonable v0.9.0
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling tetsy-fixed-hash v0.7.1
[INFO] [stderr]    Compiling twox-hash v1.6.1
[INFO] [stderr]    Compiling prost v0.7.0
[INFO] [stderr]    Compiling pin-project v0.4.28
[INFO] [stderr]    Compiling asn1_der v0.6.3
[INFO] [stderr]    Compiling twasmi v0.6.2
[INFO] [stderr]    Compiling curve25519-dalek v3.2.0
[INFO] [stderr]    Compiling curve25519-dalek v2.1.3
[INFO] [stderr]    Compiling merlin v2.0.1
[INFO] [stderr]    Compiling secrecy v0.7.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling prost-types v0.7.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling panic-handler v2.1.2
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling tetsy-trie-db v0.22.3
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr] error: could not compile `libsecp256k1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name secp256k1 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libsecp256k1-0.3.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="hmac"' --cfg 'feature="hmac-drbg"' --cfg 'feature="sha2"' --cfg 'feature="std"' --cfg 'feature="typenum"' -C metadata=f89b4a717eb517a9 -C extra-filename=-f89b4a717eb517a9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern arrayref=/opt/rustwide/target/debug/deps/libarrayref-dfd5feafb83e6c19.rmeta --extern crunchy=/opt/rustwide/target/debug/deps/libcrunchy-73ef11d25da50800.rmeta --extern digest=/opt/rustwide/target/debug/deps/libdigest-fc2bbd0e851058fc.rmeta --extern hmac_drbg=/opt/rustwide/target/debug/deps/libhmac_drbg-2d308766fa0bd7c4.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-61871eed346e1039.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-7090d6b95499803d.rmeta --extern subtle=/opt/rustwide/target/debug/deps/libsubtle-1c936aa8341cd523.rmeta --extern typenum=/opt/rustwide/target/debug/deps/libtypenum-81ca94bc9a0f2863.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "297dabc207ab9da697b49beeed5a4b885507bd94f033e5c950347257a2070e3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297dabc207ab9da697b49beeed5a4b885507bd94f033e5c950347257a2070e3c", kill_on_drop: false }`
[INFO] [stdout] 297dabc207ab9da697b49beeed5a4b885507bd94f033e5c950347257a2070e3c