[INFO] fetching crate titlefmt 0.4.0...
[INFO] testing titlefmt-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate titlefmt 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate titlefmt 0.4.0 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 crates.io crate titlefmt 0.4.0
[INFO] finished tweaking crates.io crate titlefmt 0.4.0
[INFO] tweaked toml for crates.io crate titlefmt 0.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 64773871331e9affbca49555be9d2f5fb80f5f506db8b05e79bf7d5967d101dd
[INFO] running `Command { std: "docker" "start" "-a" "64773871331e9affbca49555be9d2f5fb80f5f506db8b05e79bf7d5967d101dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64773871331e9affbca49555be9d2f5fb80f5f506db8b05e79bf7d5967d101dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64773871331e9affbca49555be9d2f5fb80f5f506db8b05e79bf7d5967d101dd", kill_on_drop: false }`
[INFO] [stdout] 64773871331e9affbca49555be9d2f5fb80f5f506db8b05e79bf7d5967d101dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c2e0038e9391302b44b60258d945342fd2b21d3632453a21fb1fb57dd349a9f3
[INFO] running `Command { std: "docker" "start" "-a" "c2e0038e9391302b44b60258d945342fd2b21d3632453a21fb1fb57dd349a9f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling titlefmt v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/metadata/mod.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn tag_value(&self, &str) -> Option<String>;
[INFO] [stdout]   |                         ^^^^ help: try naming the parameter or explicitly ignoring it: `_: &str`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub type FunctionClosure<T> = Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "c2e0038e9391302b44b60258d945342fd2b21d3632453a21fb1fb57dd349a9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2e0038e9391302b44b60258d945342fd2b21d3632453a21fb1fb57dd349a9f3", kill_on_drop: false }`
[INFO] [stdout] c2e0038e9391302b44b60258d945342fd2b21d3632453a21fb1fb57dd349a9f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 15d911ad390319756f7c240fe238736f084e4b483666d2bb7fd6ea4b68f39555
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "15d911ad390319756f7c240fe238736f084e4b483666d2bb7fd6ea4b68f39555", kill_on_drop: false }`
[INFO] [stderr]    Compiling titlefmt v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/metadata/mod.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn tag_value(&self, &str) -> Option<String>;
[INFO] [stdout]   |                         ^^^^ help: try naming the parameter or explicitly ignoring it: `_: &str`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub type FunctionClosure<T> = Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/metadata/mod.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn tag_value(&self, &str) -> Option<String>;
[INFO] [stdout]   |                         ^^^^ help: try naming the parameter or explicitly ignoring it: `_: &str`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/function/mod.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub type FunctionClosure<T> = Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "15d911ad390319756f7c240fe238736f084e4b483666d2bb7fd6ea4b68f39555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d911ad390319756f7c240fe238736f084e4b483666d2bb7fd6ea4b68f39555", kill_on_drop: false }`
[INFO] [stdout] 15d911ad390319756f7c240fe238736f084e4b483666d2bb7fd6ea4b68f39555
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6d672ec24dc54732dc5239b3dbb554c4473fba0c6219185502ff129693a753aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d672ec24dc54732dc5239b3dbb554c4473fba0c6219185502ff129693a753aa", kill_on_drop: false }`
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stderr]  --> src/metadata/mod.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn tag_value(&self, &str) -> Option<String>;
[INFO] [stderr]   |                         ^^^^ help: try naming the parameter or explicitly ignoring it: `_: &str`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/function/mod.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/function/mod.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub type FunctionClosure<T> = Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[Box<Expression<T>>], &T) -> Result<Evaluation, Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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: `titlefmt` (lib) generated 3 warnings
[INFO] [stderr] warning: `titlefmt` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/titlefmt-19016cfd05f5e303)
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test expression::test::test_apply_tags ... ok
[INFO] [stdout] test function::arithmetic::add::test::test_function_add ... ok
[INFO] [stdout] test expression::test::test_apply_optional ... ok
[INFO] [stdout] test expression::test::test_apply_simple_text ... ok
[INFO] [stdout] test function::arithmetic::div::test::test_function_div ... ok
[INFO] [stdout] test expression::test::test_parsed ... ok
[INFO] [stdout] test function::arithmetic::greater::test::test_function_greater ... ok
[INFO] [stdout] test function::control_flow::if2::test::test_function_if2 ... ok
[INFO] [stdout] test function::string::directory_path::test::test_function_directory_path ... ok
[INFO] [stdout] test function::arithmetic::max::test::test_function_max ... ok
[INFO] [stdout] test function::string::abbr::test::test_function_abbr ... ok
[INFO] [stdout] test function::string::filename::test::test_function_ext ... ok
[INFO] [stdout] test function::control_flow::if_::test::test_function_if ... ok
[INFO] [stdout] test function::string::ascii::test::test_function_ascii ... ok
[INFO] [stdout] test function::control_flow::if3::test::test_function_if3 ... ok
[INFO] [stdout] test function::control_flow::select::test::test_function_select ... ok
[INFO] [stdout] test function::arithmetic::mod_::test::test_function_mod ... ok
[INFO] [stdout] test function::string::ext::test::test_function_ext ... ok
[INFO] [stdout] test function::logical::xor::test::test_function_xor ... ok
[INFO] [stdout] test function::string::hex::test::test_function_hex ... ok
[INFO] [stdout] test function::string::caps2::test::test_function_caps2 ... ok
[INFO] [stdout] test function::string::caps::test::test_function_caps ... ok
[INFO] [stdout] test function::string::substr::test::test_function_substr ... ok
[INFO] [stdout] test function::string::left::test::test_function_left_cut ... ok
[INFO] [stdout] test function::string::right::test::test_function_right ... ok
[INFO] [stdout] test function::string::insert::test::test_function_insert ... ok
[INFO] [stdout] test function::arithmetic::min::test::test_function_min ... ok
[INFO] [stdout] test function::string::directory::test::test_function_directory ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests titlefmt
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d672ec24dc54732dc5239b3dbb554c4473fba0c6219185502ff129693a753aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d672ec24dc54732dc5239b3dbb554c4473fba0c6219185502ff129693a753aa", kill_on_drop: false }`
[INFO] [stdout] 6d672ec24dc54732dc5239b3dbb554c4473fba0c6219185502ff129693a753aa