[INFO] cloning repository https://github.com/maxfer1221/calculus-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxfer1221/calculus-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxfer1221%2Fcalculus-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxfer1221%2Fcalculus-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99507c897ccfaa3e47ea8750603b092cef587de6
[INFO] checking maxfer1221/calculus-rs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxfer1221%2Fcalculus-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxfer1221/calculus-rs 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/maxfer1221/calculus-rs
[INFO] finished tweaking git repo https://github.com/maxfer1221/calculus-rs
[INFO] tweaked toml for git repo https://github.com/maxfer1221/calculus-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/maxfer1221/calculus-rs 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 sdl2 v0.35.1
[INFO] [stderr]   Downloaded sdl2-sys v0.35.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ffcd082f8ceaae65439f02959f3294eeee18de8fd1d5742fcc937d0aab8eb90
[INFO] running `Command { std: "docker" "start" "-a" "7ffcd082f8ceaae65439f02959f3294eeee18de8fd1d5742fcc937d0aab8eb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ffcd082f8ceaae65439f02959f3294eeee18de8fd1d5742fcc937d0aab8eb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ffcd082f8ceaae65439f02959f3294eeee18de8fd1d5742fcc937d0aab8eb90", kill_on_drop: false }`
[INFO] [stdout] 7ffcd082f8ceaae65439f02959f3294eeee18de8fd1d5742fcc937d0aab8eb90
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd579409dfec0843c31ae5b37fe164ee834b48586ada04f30efdfd9925d7d2f9
[INFO] running `Command { std: "docker" "start" "-a" "bd579409dfec0843c31ae5b37fe164ee834b48586ada04f30efdfd9925d7d2f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking c_vec v2.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]     Checking function-comparison v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Power` is never constructed
[INFO] [stdout]  --> src/function.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Function<T> {
[INFO] [stdout]   |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Power(Box<Function<T>>, T),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Function` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Constants` is never used
[INFO] [stdout]   --> src/function.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Constants {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Power` is never constructed
[INFO] [stdout]  --> src/function.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Function<T> {
[INFO] [stdout]   |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Power(Box<Function<T>>, T),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Function` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Constants` is never used
[INFO] [stdout]   --> src/function.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Constants {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "bd579409dfec0843c31ae5b37fe164ee834b48586ada04f30efdfd9925d7d2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd579409dfec0843c31ae5b37fe164ee834b48586ada04f30efdfd9925d7d2f9", kill_on_drop: false }`
[INFO] [stdout] bd579409dfec0843c31ae5b37fe164ee834b48586ada04f30efdfd9925d7d2f9
[INFO] checking maxfer1221/calculus-rs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxfer1221%2Fcalculus-rs" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxfer1221/calculus-rs on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxfer1221/calculus-rs
[INFO] finished tweaking git repo https://github.com/maxfer1221/calculus-rs
[INFO] tweaked toml for git repo https://github.com/maxfer1221/calculus-rs written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxfer1221/calculus-rs 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 140e11eb648d2ec98dcff9030fee1882fc96d50cc6b50698ac3474e9d22c03d1
[INFO] running `Command { std: "docker" "start" "-a" "140e11eb648d2ec98dcff9030fee1882fc96d50cc6b50698ac3474e9d22c03d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "140e11eb648d2ec98dcff9030fee1882fc96d50cc6b50698ac3474e9d22c03d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "140e11eb648d2ec98dcff9030fee1882fc96d50cc6b50698ac3474e9d22c03d1", kill_on_drop: false }`
[INFO] [stdout] 140e11eb648d2ec98dcff9030fee1882fc96d50cc6b50698ac3474e9d22c03d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c729cb41dd77a9f82a8ed0c6d61d97d9ef59fbf6544dd4d02de632558c37515c
[INFO] running `Command { std: "docker" "start" "-a" "c729cb41dd77a9f82a8ed0c6d61d97d9ef59fbf6544dd4d02de632558c37515c", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking c_vec v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/sdl2-0.35.1/src/sdl2/render.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |             panic!();
[INFO] [stdout]     |             ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sdl2` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c729cb41dd77a9f82a8ed0c6d61d97d9ef59fbf6544dd4d02de632558c37515c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c729cb41dd77a9f82a8ed0c6d61d97d9ef59fbf6544dd4d02de632558c37515c", kill_on_drop: false }`
[INFO] [stdout] c729cb41dd77a9f82a8ed0c6d61d97d9ef59fbf6544dd4d02de632558c37515c