[INFO] cloning repository https://github.com/tallinn1960/permutations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tallinn1960/permutations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallinn1960%2Fpermutations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallinn1960%2Fpermutations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8c1603867bec062c2d6f0ee128ca5ea45924dcb
[INFO] testing tallinn1960/permutations against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallinn1960%2Fpermutations" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tallinn1960/permutations
[INFO] finished tweaking git repo https://github.com/tallinn1960/permutations
[INFO] tweaked toml for git repo https://github.com/tallinn1960/permutations written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tallinn1960/permutations on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tallinn1960/permutations 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b532621bc57e7e0d9a4839fced314c92444f3a1960f1660417884d55f9c7b511
[INFO] running `Command { std: "docker" "start" "-a" "b532621bc57e7e0d9a4839fced314c92444f3a1960f1660417884d55f9c7b511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b532621bc57e7e0d9a4839fced314c92444f3a1960f1660417884d55f9c7b511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b532621bc57e7e0d9a4839fced314c92444f3a1960f1660417884d55f9c7b511", kill_on_drop: false }`
[INFO] [stdout] b532621bc57e7e0d9a4839fced314c92444f3a1960f1660417884d55f9c7b511
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 894bb89cbe29007b52ec176edd722ae217f686325aedd5d43b30573bb0934df9
[INFO] running `Command { std: "docker" "start" "-a" "894bb89cbe29007b52ec176edd722ae217f686325aedd5d43b30573bb0934df9", kill_on_drop: false }`
[INFO] [stderr]    Compiling permutations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> src/lib.rs:1:66
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&T>> {
[INFO] [stdout]   |                              -- the lifetime is named here       ^^ the same lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&'a T>> {
[INFO] [stdout]   |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "894bb89cbe29007b52ec176edd722ae217f686325aedd5d43b30573bb0934df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "894bb89cbe29007b52ec176edd722ae217f686325aedd5d43b30573bb0934df9", kill_on_drop: false }`
[INFO] [stdout] 894bb89cbe29007b52ec176edd722ae217f686325aedd5d43b30573bb0934df9
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcbc751bf69627c10a6b2b74c2952ae25a433144352a129b3cdec0c2c0f9eada
[INFO] running `Command { std: "docker" "start" "-a" "dcbc751bf69627c10a6b2b74c2952ae25a433144352a129b3cdec0c2c0f9eada", kill_on_drop: false }`
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> src/lib.rs:1:66
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&T>> {
[INFO] [stdout]   |                              -- the lifetime is named here       ^^ the same lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&'a T>> {
[INFO] [stdout]   |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling permutations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> src/lib.rs:1:66
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&T>> {
[INFO] [stdout]   |                              -- the lifetime is named here       ^^ the same lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&'a T>> {
[INFO] [stdout]   |                                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "dcbc751bf69627c10a6b2b74c2952ae25a433144352a129b3cdec0c2c0f9eada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcbc751bf69627c10a6b2b74c2952ae25a433144352a129b3cdec0c2c0f9eada", kill_on_drop: false }`
[INFO] [stdout] dcbc751bf69627c10a6b2b74c2952ae25a433144352a129b3cdec0c2c0f9eada
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8159fbaab7a89ebba5b61e016e4085e3d999b515fd85a1f3b227da5deb8a0ed2
[INFO] running `Command { std: "docker" "start" "-a" "8159fbaab7a89ebba5b61e016e4085e3d999b515fd85a1f3b227da5deb8a0ed2", kill_on_drop: false }`
[INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stderr]  --> src/lib.rs:1:66
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&T>> {
[INFO] [stderr]   |                              -- the lifetime is named here       ^^ the same lifetime is elided here
[INFO] [stderr]   |
[INFO] [stderr]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn permute<'a, T>(data: &'a [T]) -> impl Iterator<Item = Vec<&'a T>> {
[INFO] [stderr]   |                                                                   ++
[INFO] [stderr] 
[INFO] [stderr] warning: `permutations` (lib) generated 1 warning (run `cargo fix --lib -p permutations` to apply 1 suggestion)
[INFO] [stderr] warning: `permutations` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/permutations-c087723ad1ac3dac)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_permute ... ok
[INFO] [stdout] test tests::test_permute_cloned ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests permutations
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8159fbaab7a89ebba5b61e016e4085e3d999b515fd85a1f3b227da5deb8a0ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8159fbaab7a89ebba5b61e016e4085e3d999b515fd85a1f3b227da5deb8a0ed2", kill_on_drop: false }`
[INFO] [stdout] 8159fbaab7a89ebba5b61e016e4085e3d999b515fd85a1f3b227da5deb8a0ed2