[INFO] cloning repository https://github.com/QuoteNat/fe_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/QuoteNat/fe_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuoteNat%2Ffe_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuoteNat%2Ffe_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1aa1282c94e15ea62bae42322cd8366045b511d4
[INFO] checking QuoteNat/fe_tracer against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuoteNat%2Ffe_tracer" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QuoteNat/fe_tracer 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/QuoteNat/fe_tracer
[INFO] finished tweaking git repo https://github.com/QuoteNat/fe_tracer
[INFO] tweaked toml for git repo https://github.com/QuoteNat/fe_tracer written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/QuoteNat/fe_tracer 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 44fd9b08eb78c3d102e8856c5a3b9cfe3d38ab8e7b2b5353f671712f80b42e16
[INFO] running `Command { std: "docker" "start" "-a" "44fd9b08eb78c3d102e8856c5a3b9cfe3d38ab8e7b2b5353f671712f80b42e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44fd9b08eb78c3d102e8856c5a3b9cfe3d38ab8e7b2b5353f671712f80b42e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44fd9b08eb78c3d102e8856c5a3b9cfe3d38ab8e7b2b5353f671712f80b42e16", kill_on_drop: false }`
[INFO] [stdout] 44fd9b08eb78c3d102e8856c5a3b9cfe3d38ab8e7b2b5353f671712f80b42e16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 469dff7c759d61118213a9ef608efeb84d6f63c9e72363057af320b116b940db
[INFO] running `Command { std: "docker" "start" "-a" "469dff7c759d61118213a9ef608efeb84d6f63c9e72363057af320b116b940db", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking fe_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Framebuffer` is never constructed
[INFO] [stdout]  --> src/framebuffer.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Framebuffer {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dot` is never used
[INFO] [stdout]   --> src/vector.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn dot(lhs: Vec3D, rhs: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length` is never used
[INFO] [stdout]   --> src/vector.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn length(vec: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Framebuffer` is never constructed
[INFO] [stdout]  --> src/framebuffer.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Framebuffer {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `distance` is never used
[INFO] [stdout]   --> src/vector.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn distance(lhs: Vec3D, rhs: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `component_mult` is never used
[INFO] [stdout]   --> src/vector.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn component_mult(lhs: Vec3D, rhs: Vec3D) -> Vec3D {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dot` is never used
[INFO] [stdout]   --> src/vector.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn dot(lhs: Vec3D, rhs: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length` is never used
[INFO] [stdout]   --> src/vector.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn length(vec: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `distance` is never used
[INFO] [stdout]   --> src/vector.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn distance(lhs: Vec3D, rhs: Vec3D) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `component_mult` is never used
[INFO] [stdout]   --> src/vector.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn component_mult(lhs: Vec3D, rhs: Vec3D) -> Vec3D {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "469dff7c759d61118213a9ef608efeb84d6f63c9e72363057af320b116b940db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469dff7c759d61118213a9ef608efeb84d6f63c9e72363057af320b116b940db", kill_on_drop: false }`
[INFO] [stdout] 469dff7c759d61118213a9ef608efeb84d6f63c9e72363057af320b116b940db
[INFO] checking QuoteNat/fe_tracer against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuoteNat%2Ffe_tracer" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QuoteNat/fe_tracer 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/QuoteNat/fe_tracer
[INFO] finished tweaking git repo https://github.com/QuoteNat/fe_tracer
[INFO] tweaked toml for git repo https://github.com/QuoteNat/fe_tracer written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/QuoteNat/fe_tracer 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ddb517e6e87a66d42859338475d371eb991f414cd9dd9fa9dab85cd6d07dc4a
[INFO] running `Command { std: "docker" "start" "-a" "6ddb517e6e87a66d42859338475d371eb991f414cd9dd9fa9dab85cd6d07dc4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ddb517e6e87a66d42859338475d371eb991f414cd9dd9fa9dab85cd6d07dc4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ddb517e6e87a66d42859338475d371eb991f414cd9dd9fa9dab85cd6d07dc4a", kill_on_drop: false }`
[INFO] [stdout] 6ddb517e6e87a66d42859338475d371eb991f414cd9dd9fa9dab85cd6d07dc4a
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd56fe00909e5bbc77c1f17b6620fe206a260806b9dbb5277b55a2272cc41dcb
[INFO] running `Command { std: "docker" "start" "-a" "cd56fe00909e5bbc77c1f17b6620fe206a260806b9dbb5277b55a2272cc41dcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/miniz_oxide-0.5.1/src/inflate/core.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1107 | /         match state {
[INFO] [stdout] 1108 | |             Start => generate_state!(state, 'state_machine, {
[INFO] [stdout] 1109 | |                 l.bit_buf = 0;
[INFO] [stdout] 1110 | |                 l.num_bits = 0;
[INFO] [stdout] ...    |
[INFO] [stdout] 1639 | |             _ => break TINFLStatus::Failed,
[INFO] [stdout] 1640 | |         };
[INFO] [stdout]      | |_________^ cannot infer type
[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 `miniz_oxide` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cd56fe00909e5bbc77c1f17b6620fe206a260806b9dbb5277b55a2272cc41dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd56fe00909e5bbc77c1f17b6620fe206a260806b9dbb5277b55a2272cc41dcb", kill_on_drop: false }`
[INFO] [stdout] cd56fe00909e5bbc77c1f17b6620fe206a260806b9dbb5277b55a2272cc41dcb