[INFO] fetching crate matrixmultiply 0.3.8...
[INFO] checking matrixmultiply-0.3.8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate matrixmultiply 0.3.8 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate matrixmultiply 0.3.8 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate matrixmultiply 0.3.8
[INFO] finished tweaking crates.io crate matrixmultiply 0.3.8
[INFO] tweaked toml for crates.io crate matrixmultiply 0.3.8 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate matrixmultiply 0.3.8 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread-tree v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d15f10cba7febc4cb0d54d8640f13184b441c2f3e5c9276f674c0242a380c97
[INFO] running `Command { std: "docker" "start" "-a" "4d15f10cba7febc4cb0d54d8640f13184b441c2f3e5c9276f674c0242a380c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d15f10cba7febc4cb0d54d8640f13184b441c2f3e5c9276f674c0242a380c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d15f10cba7febc4cb0d54d8640f13184b441c2f3e5c9276f674c0242a380c97", kill_on_drop: false }`
[INFO] [stdout] 4d15f10cba7febc4cb0d54d8640f13184b441c2f3e5c9276f674c0242a380c97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98bb9f8d6b36d7983f62140175c34c50bb6355b5b9324209e6a7ab528efe457d
[INFO] running `Command { std: "docker" "start" "-a" "98bb9f8d6b36d7983f62140175c34c50bb6355b5b9324209e6a7ab528efe457d", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stdout] warning: lint `suspicious_auto_trait_impls` has been removed: no longer needed, see #93367 <https://github.com/rust-lang/rust/issues/93367> for more information
[INFO] [stdout]  --> src/ptr.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![allow(unknown_lints, suspicious_auto_trait_impls)]
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `test_value` is never used
[INFO] [stdout]   --> src/kernel.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub(crate) trait Element : Copy + Send + Sync {
[INFO] [stdout]    |                  ------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 97 |     fn test_value() -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `one` is never used
[INFO] [stdout]   --> examples/usegemm.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait Float : Copy + Display + Debug + PartialEq {
[INFO] [stdout]    |       ----- associated function in this trait
[INFO] [stdout] 23 |     fn zero() -> Self;
[INFO] [stdout] 24 |     fn one() -> Self;
[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: lint `suspicious_auto_trait_impls` has been removed: no longer needed, see #93367 <https://github.com/rust-lang/rust/issues/93367> for more information
[INFO] [stdout]  --> src/ptr.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![allow(unknown_lints, suspicious_auto_trait_impls)]
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "98bb9f8d6b36d7983f62140175c34c50bb6355b5b9324209e6a7ab528efe457d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bb9f8d6b36d7983f62140175c34c50bb6355b5b9324209e6a7ab528efe457d", kill_on_drop: false }`
[INFO] [stdout] 98bb9f8d6b36d7983f62140175c34c50bb6355b5b9324209e6a7ab528efe457d
[INFO] checking matrixmultiply-0.3.8 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate matrixmultiply 0.3.8 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate matrixmultiply 0.3.8 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate matrixmultiply 0.3.8
[INFO] finished tweaking crates.io crate matrixmultiply 0.3.8
[INFO] tweaked toml for crates.io crate matrixmultiply 0.3.8 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate matrixmultiply 0.3.8 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 606a48b572897601b017b00ba2799442c307d228b7bd8698ea8741d653614828
[INFO] running `Command { std: "docker" "start" "-a" "606a48b572897601b017b00ba2799442c307d228b7bd8698ea8741d653614828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "606a48b572897601b017b00ba2799442c307d228b7bd8698ea8741d653614828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "606a48b572897601b017b00ba2799442c307d228b7bd8698ea8741d653614828", kill_on_drop: false }`
[INFO] [stdout] 606a48b572897601b017b00ba2799442c307d228b7bd8698ea8741d653614828
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a3d4ed4220a3731bf0755e8638c1663a9acc8b60aeeb24ca8e08ed7158ce2ce
[INFO] running `Command { std: "docker" "start" "-a" "8a3d4ed4220a3731bf0755e8638c1663a9acc8b60aeeb24ca8e08ed7158ce2ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stdout] warning: lint `suspicious_auto_trait_impls` has been removed: no longer needed, see #93367 <https://github.com/rust-lang/rust/issues/93367> for more information
[INFO] [stdout]  --> src/ptr.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![allow(unknown_lints, suspicious_auto_trait_impls)]
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `test_value` is never used
[INFO] [stdout]   --> src/kernel.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub(crate) trait Element : Copy + Send + Sync {
[INFO] [stdout]    |                  ------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 97 |     fn test_value() -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `one` is never used
[INFO] [stdout]   --> examples/usegemm.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait Float : Copy + Display + Debug + PartialEq {
[INFO] [stdout]    |       ----- associated function in this trait
[INFO] [stdout] 23 |     fn zero() -> Self;
[INFO] [stdout] 24 |     fn one() -> Self;
[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: lint `suspicious_auto_trait_impls` has been removed: no longer needed, see #93367 <https://github.com/rust-lang/rust/issues/93367> for more information
[INFO] [stdout]  --> src/ptr.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![allow(unknown_lints, suspicious_auto_trait_impls)]
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "8a3d4ed4220a3731bf0755e8638c1663a9acc8b60aeeb24ca8e08ed7158ce2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3d4ed4220a3731bf0755e8638c1663a9acc8b60aeeb24ca8e08ed7158ce2ce", kill_on_drop: false }`
[INFO] [stdout] 8a3d4ed4220a3731bf0755e8638c1663a9acc8b60aeeb24ca8e08ed7158ce2ce