[INFO] fetching crate viewit 0.1.5...
[INFO] testing viewit-0.1.5 against 1.90.0 for beta-1.91-3
[INFO] extracting crate viewit 0.1.5 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate viewit 0.1.5
[INFO] finished tweaking crates.io crate viewit 0.1.5
[INFO] tweaked toml for crates.io crate viewit 0.1.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate viewit 0.1.5 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate viewit 0.1.5 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_macro v0.14.3
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded darling v0.14.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.51
[INFO] [stderr]   Downloaded derivit-core v0.1.5
[INFO] [stderr]   Downloaded darling_core v0.14.3
[INFO] [stderr]   Downloaded prettyplease v0.1.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e7fbbb05de83f272f74f13a47444f0ce9d47249a0aa048e4c1fded103ac0047
[INFO] running `Command { std: "docker" "start" "-a" "5e7fbbb05de83f272f74f13a47444f0ce9d47249a0aa048e4c1fded103ac0047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e7fbbb05de83f272f74f13a47444f0ce9d47249a0aa048e4c1fded103ac0047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7fbbb05de83f272f74f13a47444f0ce9d47249a0aa048e4c1fded103ac0047", kill_on_drop: false }`
[INFO] [stdout] 5e7fbbb05de83f272f74f13a47444f0ce9d47249a0aa048e4c1fded103ac0047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8f57b7717632562d539dc13c0ae17fb9edf8c687e39e6474ef756740c6faf61
[INFO] running `Command { std: "docker" "start" "-a" "b8f57b7717632562d539dc13c0ae17fb9edf8c687e39e6474ef756740c6faf61", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling prettyplease v0.1.24
[INFO] [stderr]    Compiling darling_core v0.14.3
[INFO] [stderr]    Compiling darling_macro v0.14.3
[INFO] [stderr]    Compiling darling v0.14.3
[INFO] [stderr]    Compiling derivit-core v0.1.5
[INFO] [stderr]    Compiling viewit v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.13s
[INFO] running `Command { std: "docker" "inspect" "b8f57b7717632562d539dc13c0ae17fb9edf8c687e39e6474ef756740c6faf61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8f57b7717632562d539dc13c0ae17fb9edf8c687e39e6474ef756740c6faf61", kill_on_drop: false }`
[INFO] [stdout] b8f57b7717632562d539dc13c0ae17fb9edf8c687e39e6474ef756740c6faf61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 285d3e5c8f18f5b4c3539eee410249ed6ed6b5ba326c22c7fb333e94affbaace
[INFO] running `Command { std: "docker" "start" "-a" "285d3e5c8f18f5b4c3539eee410249ed6ed6b5ba326c22c7fb333e94affbaace", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling prettyplease v0.1.24
[INFO] [stderr]    Compiling darling_core v0.14.3
[INFO] [stderr]    Compiling darling_macro v0.14.3
[INFO] [stderr]    Compiling darling v0.14.3
[INFO] [stderr]    Compiling derivit-core v0.1.5
[INFO] [stderr]    Compiling viewit v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] pub struct Foo {
[INFO] [stdout]     pub(crate) f1: u8,
[INFO] [stdout]     pub(crate) f2: u16,
[INFO] [stdout]     pub(crate) f3: String,
[INFO] [stdout]     pub(crate) f4: Vec<u8>,
[INFO] [stdout] }
[INFO] [stdout] impl Foo {
[INFO] [stdout]     ///asdasd
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub const fn get_first_field(&self) -> u8 {
[INFO] [stdout]         self.f1
[INFO] [stdout]     }
[INFO] [stdout]     #[doc(hidden)]
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub(crate) fn get_f3<T: for<'a> From<&'a String>>(&self) -> T {
[INFO] [stdout]         T::from(&self.f3)
[INFO] [stdout]     }
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub(crate) fn get_f4(&self) -> String {
[INFO] [stdout]         vec_to_string(&self.f4)
[INFO] [stdout]     }
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub(crate) fn with_f2(&mut self, val: u16) {
[INFO] [stdout]         self.f2 = val;
[INFO] [stdout]     }
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub(crate) fn with_f3(&mut self, val: String) {
[INFO] [stdout]         self.f3 = val;
[INFO] [stdout]     }
[INFO] [stdout]     #[inline]
[INFO] [stdout]     pub(crate) fn with_f4(&mut self, val: Vec<u8>) {
[INFO] [stdout]         self.f4 = val;
[INFO] [stdout]     }
[INFO] [stdout] }
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FromString` is never constructed
[INFO] [stdout]  --> examples/foo.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct FromString {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vec_to_string` is never used
[INFO] [stdout]   --> examples/foo.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn vec_to_string(src: &[u8]) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `f2`, `f3`, and `f4` are never read
[INFO] [stdout]   --> examples/foo.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Foo {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 59 |   f2: u16,
[INFO] [stdout]    |   ^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |   f3: String,
[INFO] [stdout]    |   ^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |   f4: Vec<u8>,
[INFO] [stdout]    |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.02s
[INFO] running `Command { std: "docker" "inspect" "285d3e5c8f18f5b4c3539eee410249ed6ed6b5ba326c22c7fb333e94affbaace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "285d3e5c8f18f5b4c3539eee410249ed6ed6b5ba326c22c7fb333e94affbaace", kill_on_drop: false }`
[INFO] [stdout] 285d3e5c8f18f5b4c3539eee410249ed6ed6b5ba326c22c7fb333e94affbaace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b38387f3c409e649547c328808796b422abb02dcb2aca62269ffceee4ecdd83
[INFO] running `Command { std: "docker" "start" "-a" "3b38387f3c409e649547c328808796b422abb02dcb2aca62269ffceee4ecdd83", kill_on_drop: false }`
[INFO] [stderr] warning: struct `FromString` is never constructed
[INFO] [stderr]  --> examples/foo.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct FromString {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `vec_to_string` is never used
[INFO] [stderr]   --> examples/foo.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn vec_to_string(src: &[u8]) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `f2`, `f3`, and `f4` are never read
[INFO] [stderr]   --> examples/foo.rs:59:3
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct Foo {
[INFO] [stderr]    |            --- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 59 |   f2: u16,
[INFO] [stderr]    |   ^^
[INFO] [stderr] ...
[INFO] [stderr] 76 |   f3: String,
[INFO] [stderr]    |   ^^
[INFO] [stderr] ...
[INFO] [stderr] 90 |   f4: Vec<u8>,
[INFO] [stderr]    |   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: `viewit` (example "foo") generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/viewit-bdf5d16a4e3ea2e2)
[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] [stderr]    Doc-tests viewit
[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" "3b38387f3c409e649547c328808796b422abb02dcb2aca62269ffceee4ecdd83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b38387f3c409e649547c328808796b422abb02dcb2aca62269ffceee4ecdd83", kill_on_drop: false }`
[INFO] [stdout] 3b38387f3c409e649547c328808796b422abb02dcb2aca62269ffceee4ecdd83