[INFO] cloning repository https://github.com/AhmedBoin/Rust_Secp256k1_ECC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AhmedBoin/Rust_Secp256k1_ECC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmedBoin%2FRust_Secp256k1_ECC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmedBoin%2FRust_Secp256k1_ECC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a7def6815ffe16632be19c18bdcb0260f6a69291
[INFO] checking AhmedBoin/Rust_Secp256k1_ECC against master#da2544bfbe84df7b24d83c029c74299ebf6112c6 for pr-149681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmedBoin%2FRust_Secp256k1_ECC" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AhmedBoin/Rust_Secp256k1_ECC
[INFO] finished tweaking git repo https://github.com/AhmedBoin/Rust_Secp256k1_ECC
[INFO] tweaked toml for git repo https://github.com/AhmedBoin/Rust_Secp256k1_ECC written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AhmedBoin/Rust_Secp256k1_ECC on toolchain da2544bfbe84df7b24d83c029c74299ebf6112c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AhmedBoin/Rust_Secp256k1_ECC 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" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3940064c0ee27e1dcab9330ea1398ceb7d6d953faf4f8f222606fbef7cfeca38
[INFO] running `Command { std: "docker" "start" "-a" "3940064c0ee27e1dcab9330ea1398ceb7d6d953faf4f8f222606fbef7cfeca38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3940064c0ee27e1dcab9330ea1398ceb7d6d953faf4f8f222606fbef7cfeca38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3940064c0ee27e1dcab9330ea1398ceb7d6d953faf4f8f222606fbef7cfeca38", kill_on_drop: false }`
[INFO] [stdout] 3940064c0ee27e1dcab9330ea1398ceb7d6d953faf4f8f222606fbef7cfeca38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa7c380761a381b6feba69cdf76a0489e456dccc86aefdc73b0709534c5e53f7
[INFO] running `Command { std: "docker" "start" "-a" "fa7c380761a381b6feba69cdf76a0489e456dccc86aefdc73b0709534c5e53f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]     Checking constant_time_eq v0.2.4
[INFO] [stderr]     Checking generic-array v0.14.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fa7c380761a381b6feba69cdf76a0489e456dccc86aefdc73b0709534c5e53f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7c380761a381b6feba69cdf76a0489e456dccc86aefdc73b0709534c5e53f7", kill_on_drop: false }`
[INFO] [stdout] fa7c380761a381b6feba69cdf76a0489e456dccc86aefdc73b0709534c5e53f7
