[INFO] fetching crate tiny-ec 0.1.5...
[INFO] checking tiny-ec-0.1.5 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate tiny-ec 0.1.5 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tiny-ec 0.1.5
[INFO] finished tweaking crates.io crate tiny-ec 0.1.5
[INFO] tweaked toml for crates.io crate tiny-ec 0.1.5 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tiny-ec 0.1.5 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tiny-ec 0.1.5 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edcdd0c879638c654b22b33ea2ec39450d8fdabfa593d7a5155319e2fd3ed302
[INFO] running `Command { std: "docker" "start" "-a" "edcdd0c879638c654b22b33ea2ec39450d8fdabfa593d7a5155319e2fd3ed302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edcdd0c879638c654b22b33ea2ec39450d8fdabfa593d7a5155319e2fd3ed302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edcdd0c879638c654b22b33ea2ec39450d8fdabfa593d7a5155319e2fd3ed302", kill_on_drop: false }`
[INFO] [stdout] edcdd0c879638c654b22b33ea2ec39450d8fdabfa593d7a5155319e2fd3ed302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c218ce19438e653bff2e79edfa5879d933fa1aad01696f85aea9fb9bc6a26022
[INFO] running `Command { std: "docker" "start" "-a" "c218ce19438e653bff2e79edfa5879d933fa1aad01696f85aea9fb9bc6a26022", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling cc v1.2.1
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling libsecp256k1-core v0.3.0
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]    Compiling clear_on_drop v0.2.5
[INFO] [stderr]    Compiling libsecp256k1-gen-ecmult v0.3.0
[INFO] [stderr]    Compiling libsecp256k1-gen-genmult v0.3.0
[INFO] [stderr]    Compiling tiny-ec v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking tiny-ec-core v0.3.1
[INFO] [stdout] error: struct `RecoveryId` is never constructed
[INFO] [stdout]   --> src/lib.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct RecoveryId(u8);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `RecoveryId` is never constructed
[INFO] [stdout]   --> src/lib.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct RecoveryId(u8);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tiny-ec` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `tiny-ec` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c218ce19438e653bff2e79edfa5879d933fa1aad01696f85aea9fb9bc6a26022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c218ce19438e653bff2e79edfa5879d933fa1aad01696f85aea9fb9bc6a26022", kill_on_drop: false }`
[INFO] [stdout] c218ce19438e653bff2e79edfa5879d933fa1aad01696f85aea9fb9bc6a26022
