[INFO] cloning repository https://github.com/abiriadev/github-backlinks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abiriadev/github-backlinks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabiriadev%2Fgithub-backlinks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabiriadev%2Fgithub-backlinks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15495a68b0215b43713e383b940564ac1f54e41c
[INFO] checking abiriadev/github-backlinks against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabiriadev%2Fgithub-backlinks" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abiriadev/github-backlinks on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abiriadev/github-backlinks
[INFO] finished tweaking git repo https://github.com/abiriadev/github-backlinks
[INFO] tweaked toml for git repo https://github.com/abiriadev/github-backlinks written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/abiriadev/github-backlinks 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ureq v2.7.1
[INFO] [stderr]   Downloaded flate2 v1.0.27
[INFO] [stderr]   Downloaded rustls-webpki v0.100.3
[INFO] [stderr]   Downloaded rustls-webpki v0.101.6
[INFO] [stderr]   Downloaded rustls v0.21.7
[INFO] [stderr]   Downloaded webpki-roots v0.23.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef9172f43466395c4f6ba868b2f0105956ee837423d3fce37b303072a2942e78
[INFO] running `Command { std: "docker" "start" "-a" "ef9172f43466395c4f6ba868b2f0105956ee837423d3fce37b303072a2942e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef9172f43466395c4f6ba868b2f0105956ee837423d3fce37b303072a2942e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef9172f43466395c4f6ba868b2f0105956ee837423d3fce37b303072a2942e78", kill_on_drop: false }`
[INFO] [stdout] ef9172f43466395c4f6ba868b2f0105956ee837423d3fce37b303072a2942e78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 549bcdfb3c139e70a2a426175750ee9db31336eb106c1d0bbbd8d437f6e5f8da
[INFO] running `Command { std: "docker" "start" "-a" "549bcdfb3c139e70a2a426175750ee9db31336eb106c1d0bbbd8d437f6e5f8da", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling rustls v0.21.7
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking flate2 v1.0.27
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking rustls-webpki v0.100.3
[INFO] [stderr]     Checking rustls-webpki v0.101.6
[INFO] [stderr]     Checking webpki-roots v0.23.1
[INFO] [stderr]     Checking ureq v2.7.1
[INFO] [stderr]     Checking github-backlinks-core v0.1.0 (/opt/rustwide/workdir/core)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]  --> core/tests/test.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn from(value: UreqFetcherError) -> Self { Self::RequestError }
[INFO] [stdout]   |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> core/tests/test.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct UreqFetcherError(ureq::Error);
[INFO] [stdout]   |        ---------------- ^^^^^^^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct UreqFetcherError(());
[INFO] [stdout]   |                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "549bcdfb3c139e70a2a426175750ee9db31336eb106c1d0bbbd8d437f6e5f8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "549bcdfb3c139e70a2a426175750ee9db31336eb106c1d0bbbd8d437f6e5f8da", kill_on_drop: false }`
[INFO] [stdout] 549bcdfb3c139e70a2a426175750ee9db31336eb106c1d0bbbd8d437f6e5f8da