[INFO] cloning repository https://github.com/unional/rusty-guidebook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unional/rusty-guidebook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funional%2Frusty-guidebook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funional%2Frusty-guidebook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5df318b063b69bba8bffae2ce4931382e18114c
[INFO] testing unional/rusty-guidebook against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funional%2Frusty-guidebook" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unional/rusty-guidebook on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unional/rusty-guidebook
[INFO] finished tweaking git repo https://github.com/unional/rusty-guidebook
[INFO] tweaked toml for git repo https://github.com/unional/rusty-guidebook written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/unional/rusty-guidebook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfd7b30f6dfdea5d7a6088d2378ceba54dc82da6bac504443a5012f1b583ae97
[INFO] running `Command { std: "docker" "start" "-a" "bfd7b30f6dfdea5d7a6088d2378ceba54dc82da6bac504443a5012f1b583ae97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfd7b30f6dfdea5d7a6088d2378ceba54dc82da6bac504443a5012f1b583ae97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfd7b30f6dfdea5d7a6088d2378ceba54dc82da6bac504443a5012f1b583ae97", kill_on_drop: false }`
[INFO] [stdout] bfd7b30f6dfdea5d7a6088d2378ceba54dc82da6bac504443a5012f1b583ae97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b26f7958836f1687eac2baab5839a768d1b2e5f1f51120227fd9d881c0f0a45e
[INFO] running `Command { std: "docker" "start" "-a" "b26f7958836f1687eac2baab5839a768d1b2e5f1f51120227fd9d881c0f0a45e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `s`
[INFO] [stdout]  --> src/lifetimes.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   s: String,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `A` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/lifetimes.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "b26f7958836f1687eac2baab5839a768d1b2e5f1f51120227fd9d881c0f0a45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b26f7958836f1687eac2baab5839a768d1b2e5f1f51120227fd9d881c0f0a45e", kill_on_drop: false }`
[INFO] [stdout] b26f7958836f1687eac2baab5839a768d1b2e5f1f51120227fd9d881c0f0a45e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1db48397027f6aeec6dd89ed680d1427a89937ddc41ede2b37be9022547f294a
[INFO] running `Command { std: "docker" "start" "-a" "1db48397027f6aeec6dd89ed680d1427a89937ddc41ede2b37be9022547f294a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `s`
[INFO] [stdout]  --> src/lifetimes.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   s: String,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `A` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/lifetimes.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `s`
[INFO] [stdout]  --> src/lifetimes.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   s: String,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `A` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/lifetimes.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.14s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust-a9e57fee1b856c5c)
[INFO] running `Command { std: "docker" "inspect" "1db48397027f6aeec6dd89ed680d1427a89937ddc41ede2b37be9022547f294a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db48397027f6aeec6dd89ed680d1427a89937ddc41ede2b37be9022547f294a", kill_on_drop: false }`
[INFO] [stdout] 1db48397027f6aeec6dd89ed680d1427a89937ddc41ede2b37be9022547f294a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cb1ce92fd7ed2f174c7ddf2cd16a929515e1451f35aa017bd683b336d754fa81
[INFO] running `Command { std: "docker" "start" "-a" "cb1ce92fd7ed2f174c7ddf2cd16a929515e1451f35aa017bd683b336d754fa81", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `s`
[INFO] [stderr]  --> src/lifetimes.rs:3:3
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] running 18 tests
[INFO] [stderr] 3 |   s: String,
[INFO] [stdout] test _examples::blog_post::blog_post ... ok
[INFO] [stderr]   |   ^^^^^^^^^
[INFO] [stdout] test _examples::borrows::tests::cannot_mul_borrow_with_immut_borrower ... ok
[INFO] [stderr]   |
[INFO] [stdout] test _examples::borrows::tests::multiple_immut_borrows ... ok
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test _examples::filter_shoe_size::tests::filters_by_size ... ok
[INFO] [stderr] note: `A` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] test _examples::longest::tests::get_longest_between_two_scopes ... ok
[INFO] [stderr]  --> src/lifetimes.rs:1:10
[INFO] [stdout] test _examples::overlap_traits::tests::barking ... ok
[INFO] [stderr]   |
[INFO] [stdout] test arrays::collect_vector ... ok
[INFO] [stderr] 1 | #[derive(Debug)]
[INFO] [stdout] test boxes::assume_ownership ... ok
[INFO] [stderr]   |          ^^^^^
[INFO] [stdout] test closures::curry::mutate_captured ... ok
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] test closures::curry::plus_curry ... ok
[INFO] [stderr] 
[INFO] [stdout] test functions::basic::primitive_is_copied ... ok
[INFO] [stderr] warning: `rust` (lib) generated 1 warning
[INFO] [stdout] test functions::basic::using_trait_in_fn_param ... ok
[INFO] [stderr] warning: `rust` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] test guesses::get_guess ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] [stdout] test hashmaps::main ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust-a9e57fee1b856c5c)
[INFO] [stdout] test lifetimes::lifetime ... ok
[INFO] [stderr]    Doc-tests rust
[INFO] [stdout] test hashmaps::main2 ... ok
[INFO] [stdout] test operators::plus_operator ... ok
[INFO] [stdout] test structs::try_to_tuple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "cb1ce92fd7ed2f174c7ddf2cd16a929515e1451f35aa017bd683b336d754fa81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb1ce92fd7ed2f174c7ddf2cd16a929515e1451f35aa017bd683b336d754fa81", kill_on_drop: false }`
[INFO] [stdout] cb1ce92fd7ed2f174c7ddf2cd16a929515e1451f35aa017bd683b336d754fa81