[INFO] cloning repository https://github.com/danielhtoledo2002/vector_impl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielhtoledo2002/vector_impl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhtoledo2002%2Fvector_impl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhtoledo2002%2Fvector_impl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f0532ae8f3b381666a5f75ab144d9a438650aae
[INFO] checking danielhtoledo2002/vector_impl against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhtoledo2002%2Fvector_impl" "/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/danielhtoledo2002/vector_impl 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/danielhtoledo2002/vector_impl
[INFO] finished tweaking git repo https://github.com/danielhtoledo2002/vector_impl
[INFO] tweaked toml for git repo https://github.com/danielhtoledo2002/vector_impl written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/danielhtoledo2002/vector_impl 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] 53af27b8b550921a9cc7b0002fff9ebce00d4a01d8a3a9978f85c8d3f52b05e6
[INFO] running `Command { std: "docker" "start" "-a" "53af27b8b550921a9cc7b0002fff9ebce00d4a01d8a3a9978f85c8d3f52b05e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53af27b8b550921a9cc7b0002fff9ebce00d4a01d8a3a9978f85c8d3f52b05e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53af27b8b550921a9cc7b0002fff9ebce00d4a01d8a3a9978f85c8d3f52b05e6", kill_on_drop: false }`
[INFO] [stdout] 53af27b8b550921a9cc7b0002fff9ebce00d4a01d8a3a9978f85c8d3f52b05e6
[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] 4040f9cdba953dc191ca83579cd578550c44de601b0c39a81909498ec7d3ecc5
[INFO] running `Command { std: "docker" "start" "-a" "4040f9cdba953dc191ca83579cd578550c44de601b0c39a81909498ec7d3ecc5", kill_on_drop: false }`
[INFO] [stderr]     Checking vectorr_traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `VectorMutIter` is never constructed
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct VectorMutIter<'a, T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_mut` is never used
[INFO] [stdout]    --> src/main.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl<T> Vector<T> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     fn iter_mut(&mut self) -> VectorMutIter<T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VectorMutIter` is never constructed
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct VectorMutIter<'a, T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_mut` is never used
[INFO] [stdout]    --> src/main.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl<T> Vector<T> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     fn iter_mut(&mut self) -> VectorMutIter<T> {
[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 0.06s
[INFO] running `Command { std: "docker" "inspect" "4040f9cdba953dc191ca83579cd578550c44de601b0c39a81909498ec7d3ecc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4040f9cdba953dc191ca83579cd578550c44de601b0c39a81909498ec7d3ecc5", kill_on_drop: false }`
[INFO] [stdout] 4040f9cdba953dc191ca83579cd578550c44de601b0c39a81909498ec7d3ecc5
[INFO] checking danielhtoledo2002/vector_impl against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhtoledo2002%2Fvector_impl" "/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/danielhtoledo2002/vector_impl 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/danielhtoledo2002/vector_impl
[INFO] finished tweaking git repo https://github.com/danielhtoledo2002/vector_impl
[INFO] tweaked toml for git repo https://github.com/danielhtoledo2002/vector_impl written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/danielhtoledo2002/vector_impl 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] 354e7ee3ac1e55897b11826d79c3b0c0b55549b33540d654c0912f155bc672d3
[INFO] running `Command { std: "docker" "start" "-a" "354e7ee3ac1e55897b11826d79c3b0c0b55549b33540d654c0912f155bc672d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "354e7ee3ac1e55897b11826d79c3b0c0b55549b33540d654c0912f155bc672d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "354e7ee3ac1e55897b11826d79c3b0c0b55549b33540d654c0912f155bc672d3", kill_on_drop: false }`
[INFO] [stdout] 354e7ee3ac1e55897b11826d79c3b0c0b55549b33540d654c0912f155bc672d3
[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] cbdc532f236aa314ccb3d071feea01e7df5428c58f0b024682e7cf10d4fe9222
[INFO] running `Command { std: "docker" "start" "-a" "cbdc532f236aa314ccb3d071feea01e7df5428c58f0b024682e7cf10d4fe9222", kill_on_drop: false }`
[INFO] [stderr]     Checking vectorr_traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |         .ok_or_else(|| handle_alloc_error(new_layout))
[INFO] [stdout]    |                     ^^
[INFO] [stdout]    |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 84 |         .ok_or_else(|| -> /* Type */ { handle_alloc_error(new_layout) })
[INFO] [stdout]    |                        +++++++++++++++                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |         .ok_or_else(|| handle_alloc_error(new_layout))
[INFO] [stdout]    |                     ^^
[INFO] [stdout]    |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 84 |         .ok_or_else(|| -> /* Type */ { handle_alloc_error(new_layout) })
[INFO] [stdout]    |                        +++++++++++++++                                +
[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] [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 `vectorr_traits` (bin "vectorr_traits") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `vectorr_traits` (bin "vectorr_traits" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cbdc532f236aa314ccb3d071feea01e7df5428c58f0b024682e7cf10d4fe9222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbdc532f236aa314ccb3d071feea01e7df5428c58f0b024682e7cf10d4fe9222", kill_on_drop: false }`
[INFO] [stdout] cbdc532f236aa314ccb3d071feea01e7df5428c58f0b024682e7cf10d4fe9222