[INFO] fetching crate signin 0.1.6...
[INFO] checking signin-0.1.6 against master#18a6d911caba59605eb03db1452848a85d2e5879 for pr-112743
[INFO] extracting crate signin 0.1.6 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate signin 0.1.6 on toolchain 18a6d911caba59605eb03db1452848a85d2e5879
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signin 0.1.6
[INFO] finished tweaking crates.io crate signin 0.1.6
[INFO] tweaked toml for crates.io crate signin 0.1.6 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded debug_macros v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9de530e7c1d8db822abcf4d426e136abe72be8217f49aed7ef9c38fb756b7762
[INFO] running `Command { std: "docker" "start" "-a" "9de530e7c1d8db822abcf4d426e136abe72be8217f49aed7ef9c38fb756b7762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9de530e7c1d8db822abcf4d426e136abe72be8217f49aed7ef9c38fb756b7762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de530e7c1d8db822abcf4d426e136abe72be8217f49aed7ef9c38fb756b7762", kill_on_drop: false }`
[INFO] [stdout] 9de530e7c1d8db822abcf4d426e136abe72be8217f49aed7ef9c38fb756b7762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f2afa7493edaae59e0a8d0f5f426a1cf5d3c265b0f5e2f2f399cc9b0a4c5bc3
[INFO] running `Command { std: "docker" "start" "-a" "5f2afa7493edaae59e0a8d0f5f426a1cf5d3c265b0f5e2f2f399cc9b0a4c5bc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]    Compiling openssl v0.10.54
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking debug_macros v0.0.1
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking serde_json v1.0.97
[INFO] [stderr]    Compiling openssl-sys v0.9.88
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking signin v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `kty` is never read
[INFO] [stdout]   --> src/lib.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct JsonKey {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 45 |     pub kty: String,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kty` is never read
[INFO] [stdout]   --> src/lib.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct JsonKey {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 45 |     pub kty: String,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "5f2afa7493edaae59e0a8d0f5f426a1cf5d3c265b0f5e2f2f399cc9b0a4c5bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f2afa7493edaae59e0a8d0f5f426a1cf5d3c265b0f5e2f2f399cc9b0a4c5bc3", kill_on_drop: false }`
[INFO] [stdout] 5f2afa7493edaae59e0a8d0f5f426a1cf5d3c265b0f5e2f2f399cc9b0a4c5bc3