[INFO] cloning repository https://github.com/oracleofnj/einsum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oracleofnj/einsum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foracleofnj%2Feinsum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foracleofnj%2Feinsum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0d43e882f4e9ec1116517b92b0aaf73b07b385e
[INFO] checking oracleofnj/einsum against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foracleofnj%2Feinsum" "/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/oracleofnj/einsum 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 git repo https://github.com/oracleofnj/einsum
[INFO] finished tweaking git repo https://github.com/oracleofnj/einsum
[INFO] tweaked toml for git repo https://github.com/oracleofnj/einsum written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/oracleofnj/einsum 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_distr v0.4.0
[INFO] [stderr]   Downloaded ndarray v0.15.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f142fba6a091dda69f12f6dd3654d8152e4a06f5d8c4b195fc513317a445825f
[INFO] running `Command { std: "docker" "start" "-a" "f142fba6a091dda69f12f6dd3654d8152e4a06f5d8c4b195fc513317a445825f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f142fba6a091dda69f12f6dd3654d8152e4a06f5d8c4b195fc513317a445825f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f142fba6a091dda69f12f6dd3654d8152e4a06f5d8c4b195fc513317a445825f", kill_on_drop: false }`
[INFO] [stdout] f142fba6a091dda69f12f6dd3654d8152e4a06f5d8c4b195fc513317a445825f
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6b61e9ce7152a3e6100da516ca8079467ed4141fd17b5f9e55412fa50172cab
[INFO] running `Command { std: "docker" "start" "-a" "e6b61e9ce7152a3e6100da516ca8079467ed4141fd17b5f9e55412fa50172cab", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking ndarray v0.15.1
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking ndarray_einsum_beta v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IxDyn` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 167 | use ndarray::prelude::*;
[INFO] [stdout]     |     ------------------- the item `IxDyn` is already imported here
[INFO] [stdout] 168 | use ndarray::{Data, IxDyn, LinalgScalar};
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IxDyn` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 167 | use ndarray::prelude::*;
[INFO] [stdout]     |     ------------------- the item `IxDyn` is already imported here
[INFO] [stdout] 168 | use ndarray::{Data, IxDyn, LinalgScalar};
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `orig_axis_list` is never read
[INFO] [stdout]    --> src/contractors/singleton_contractors.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub struct Summation {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 133 |     orig_axis_list: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Summation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[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: field `orig_axis_list` is never read
[INFO] [stdout]    --> src/contractors/singleton_contractors.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub struct Summation {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 133 |     orig_axis_list: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Summation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.92s
[INFO] running `Command { std: "docker" "inspect" "e6b61e9ce7152a3e6100da516ca8079467ed4141fd17b5f9e55412fa50172cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b61e9ce7152a3e6100da516ca8079467ed4141fd17b5f9e55412fa50172cab", kill_on_drop: false }`
[INFO] [stdout] e6b61e9ce7152a3e6100da516ca8079467ed4141fd17b5f9e55412fa50172cab
[INFO] checking oracleofnj/einsum against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foracleofnj%2Feinsum" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oracleofnj/einsum 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 git repo https://github.com/oracleofnj/einsum
[INFO] finished tweaking git repo https://github.com/oracleofnj/einsum
[INFO] tweaked toml for git repo https://github.com/oracleofnj/einsum written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/oracleofnj/einsum 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 46eb36dc28327adf1bba23d7701d75dba151b2b7b347498dc38d9afdb905bd66
[INFO] running `Command { std: "docker" "start" "-a" "46eb36dc28327adf1bba23d7701d75dba151b2b7b347498dc38d9afdb905bd66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46eb36dc28327adf1bba23d7701d75dba151b2b7b347498dc38d9afdb905bd66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46eb36dc28327adf1bba23d7701d75dba151b2b7b347498dc38d9afdb905bd66", kill_on_drop: false }`
[INFO] [stdout] 46eb36dc28327adf1bba23d7701d75dba151b2b7b347498dc38d9afdb905bd66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f678ce9f74d4cd6736c3015d55be9d15996b716b3d63ea38ac8adba034a02071
[INFO] running `Command { std: "docker" "start" "-a" "f678ce9f74d4cd6736c3015d55be9d15996b716b3d63ea38ac8adba034a02071", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking ndarray v0.15.1
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking ndarray_einsum_beta v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IxDyn` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 167 | use ndarray::prelude::*;
[INFO] [stdout]     |     ------------------- the item `IxDyn` is already imported here
[INFO] [stdout] 168 | use ndarray::{Data, IxDyn, LinalgScalar};
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IxDyn` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 167 | use ndarray::prelude::*;
[INFO] [stdout]     |     ------------------- the item `IxDyn` is already imported here
[INFO] [stdout] 168 | use ndarray::{Data, IxDyn, LinalgScalar};
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `orig_axis_list` is never read
[INFO] [stdout]    --> src/contractors/singleton_contractors.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub struct Summation {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 133 |     orig_axis_list: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Summation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[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: field `orig_axis_list` is never read
[INFO] [stdout]    --> src/contractors/singleton_contractors.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub struct Summation {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 133 |     orig_axis_list: Vec<usize>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Summation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.52s
[INFO] running `Command { std: "docker" "inspect" "f678ce9f74d4cd6736c3015d55be9d15996b716b3d63ea38ac8adba034a02071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f678ce9f74d4cd6736c3015d55be9d15996b716b3d63ea38ac8adba034a02071", kill_on_drop: false }`
[INFO] [stdout] f678ce9f74d4cd6736c3015d55be9d15996b716b3d63ea38ac8adba034a02071