[INFO] cloning repository https://github.com/verath/loxrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/verath/loxrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fverath%2Floxrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fverath%2Floxrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4236eba33ccc948e2c987a507a7c3cbc13db13f2
[INFO] testing verath/loxrust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fverath%2Floxrust" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/verath/loxrust on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/verath/loxrust
[INFO] finished tweaking git repo https://github.com/verath/loxrust
[INFO] tweaked toml for git repo https://github.com/verath/loxrust written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate git repo https://github.com/verath/loxrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0fd56dbf915d485df32a5e1ee1784e6e55604d8ab47ce9a9a0252a389bbe028
[INFO] running `Command { std: "docker" "start" "-a" "e0fd56dbf915d485df32a5e1ee1784e6e55604d8ab47ce9a9a0252a389bbe028", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0fd56dbf915d485df32a5e1ee1784e6e55604d8ab47ce9a9a0252a389bbe028", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fd56dbf915d485df32a5e1ee1784e6e55604d8ab47ce9a9a0252a389bbe028", kill_on_drop: false }`
[INFO] [stdout] e0fd56dbf915d485df32a5e1ee1784e6e55604d8ab47ce9a9a0252a389bbe028
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 936835a08f91a02013f15147ead2e028a3fb5e89238dca653f48eac5216766f7
[INFO] running `Command { std: "docker" "start" "-a" "936835a08f91a02013f15147ead2e028a3fb5e89238dca653f48eac5216766f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type ErrorCallback = Fn(u64, &str) -> ();
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64, &str) -> ()`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "936835a08f91a02013f15147ead2e028a3fb5e89238dca653f48eac5216766f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936835a08f91a02013f15147ead2e028a3fb5e89238dca653f48eac5216766f7", kill_on_drop: false }`
[INFO] [stdout] 936835a08f91a02013f15147ead2e028a3fb5e89238dca653f48eac5216766f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b95fcd6e2a4ab1ba2ab3010af76b5455459e8118c5dd1160569d916ac5d6871d
[INFO] running `Command { std: "docker" "start" "-a" "b95fcd6e2a4ab1ba2ab3010af76b5455459e8118c5dd1160569d916ac5d6871d", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type ErrorCallback = Fn(u64, &str) -> ();
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64, &str) -> ()`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type ErrorCallback = Fn(u64, &str) -> ();
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64, &str) -> ()`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "b95fcd6e2a4ab1ba2ab3010af76b5455459e8118c5dd1160569d916ac5d6871d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b95fcd6e2a4ab1ba2ab3010af76b5455459e8118c5dd1160569d916ac5d6871d", kill_on_drop: false }`
[INFO] [stdout] b95fcd6e2a4ab1ba2ab3010af76b5455459e8118c5dd1160569d916ac5d6871d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6fae4d69415d3a34604bedcbcf6c99b4d99800924f2407ca02fa6e55f4d993e2
[INFO] running `Command { std: "docker" "start" "-a" "6fae4d69415d3a34604bedcbcf6c99b4d99800924f2407ca02fa6e55f4d993e2", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub type ErrorCallback = Fn(u64, &str) -> ();
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64, &str) -> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `loxrust` (lib) generated 1 warning
[INFO] [stderr] warning: `loxrust` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/loxrust-aef5f7e0f64295f6)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test print::tests::test_print ... ok
[INFO] [stdout] test print::tests::test_visit_binary_expr ... ok
[INFO] [stdout] test print::tests::test_visit_grouping_expr ... ok
[INFO] [stdout] test print::tests::test_visit_literal_expr ... ok
[INFO] [stdout] test print::tests::test_visit_unary_expr ... ok
[INFO] [stdout] test scanner::tests::test_had_error_failed_scan ... ok
[INFO] [stdout] test scanner::tests::test_had_error_ok_scan ... ok
[INFO] [stdout] test scanner::tests::test_scan_identifer ... ok
[INFO] [stdout] test scanner::tests::test_scan_keyword ... ok
[INFO] [stdout] test scanner::tests::test_scan_number ... ok
[INFO] [stdout] test scanner::tests::test_scan_simple_tokens ... ok
[INFO] [stdout] test scanner::tests::test_scan_string ... ok
[INFO] [stdout] test scanner::tests::test_scan_tokens_appends_eof ... ok
[INFO] [stdout] test scanner::tests::test_scan_tokens_twice ... ok
[INFO] [stdout] test scanner::tests::test_scan_tokens_unexpected_token - should panic ... ok
[INFO] [stdout] test scanner::tests::test_scan_tokens_unterminated_string - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/loxrust-16c1323fe46afb23)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests loxrust
[INFO] [stdout] test result: ok. 0 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" "6fae4d69415d3a34604bedcbcf6c99b4d99800924f2407ca02fa6e55f4d993e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fae4d69415d3a34604bedcbcf6c99b4d99800924f2407ca02fa6e55f4d993e2", kill_on_drop: false }`
[INFO] [stdout] 6fae4d69415d3a34604bedcbcf6c99b4d99800924f2407ca02fa6e55f4d993e2