[INFO] fetching crate libknot 0.2.3...
[INFO] testing libknot-0.2.3 against 1.91.0 for beta-1.92-2
[INFO] extracting crate libknot 0.2.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate libknot 0.2.3
[INFO] finished tweaking crates.io crate libknot 0.2.3
[INFO] tweaked toml for crates.io crate libknot 0.2.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libknot 0.2.3 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate libknot 0.2.3 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-hash v2.1.0
[INFO] [stderr]   Downloaded libknot-sys v0.1.3
[INFO] [stderr]   Downloaded unix_socket2 v0.5.4
[INFO] [stderr]   Downloaded prettyplease v0.2.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a828027d77d60793ca646d8496d90265c7fe60de3a7de8c007132bf1e9833545
[INFO] running `Command { std: "docker" "start" "-a" "a828027d77d60793ca646d8496d90265c7fe60de3a7de8c007132bf1e9833545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a828027d77d60793ca646d8496d90265c7fe60de3a7de8c007132bf1e9833545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a828027d77d60793ca646d8496d90265c7fe60de3a7de8c007132bf1e9833545", kill_on_drop: false }`
[INFO] [stdout] a828027d77d60793ca646d8496d90265c7fe60de3a7de8c007132bf1e9833545
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b75a44a713133393aeff2bb083ab361130f697de8c3ef630b98c1b96f94c0c71
[INFO] running `Command { std: "docker" "start" "-a" "b75a44a713133393aeff2bb083ab361130f697de8c3ef630b98c1b96f94c0c71", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling thiserror v2.0.9
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling unix_socket2 v0.5.4
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.94
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling thiserror-impl v2.0.9
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling libknot v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `MakeFallible` is never used
[INFO] [stdout]  --> src/util.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait MakeFallible: Iterator + Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Convert` is never constructed
[INFO] [stdout]   --> src/util.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Convert<Iter: Iterator, E> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<str> {
[INFO] [stdout]    |                                ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/common.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.20s
[INFO] running `Command { std: "docker" "inspect" "b75a44a713133393aeff2bb083ab361130f697de8c3ef630b98c1b96f94c0c71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b75a44a713133393aeff2bb083ab361130f697de8c3ef630b98c1b96f94c0c71", kill_on_drop: false }`
[INFO] [stdout] b75a44a713133393aeff2bb083ab361130f697de8c3ef630b98c1b96f94c0c71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5f68a62e7b9c37c223ec237b9c2b2b4e6c18494df8aab595c5bc1f87eec8b9a
[INFO] running `Command { std: "docker" "start" "-a" "e5f68a62e7b9c37c223ec237b9c2b2b4e6c18494df8aab595c5bc1f87eec8b9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libknot v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `MakeFallible` is never used
[INFO] [stdout]  --> src/util.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait MakeFallible: Iterator + Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Convert` is never constructed
[INFO] [stdout]   --> src/util.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Convert<Iter: Iterator, E> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<str> {
[INFO] [stdout]    |                                ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/common.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MakeFallible` is never used
[INFO] [stdout]  --> src/util.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait MakeFallible: Iterator + Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Convert` is never constructed
[INFO] [stdout]   --> src/util.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Convert<Iter: Iterator, E> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<str> {
[INFO] [stdout]    |                                ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/common.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn as_ref(&self) -> ControlMessageRef<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "e5f68a62e7b9c37c223ec237b9c2b2b4e6c18494df8aab595c5bc1f87eec8b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f68a62e7b9c37c223ec237b9c2b2b4e6c18494df8aab595c5bc1f87eec8b9a", kill_on_drop: false }`
[INFO] [stdout] e5f68a62e7b9c37c223ec237b9c2b2b4e6c18494df8aab595c5bc1f87eec8b9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fdda51ef85acb1a52daa7f82ae6aa9697a03443c0e947f06f7186441ea1e8faf
[INFO] running `Command { std: "docker" "start" "-a" "fdda51ef85acb1a52daa7f82ae6aa9697a03443c0e947f06f7186441ea1e8faf", kill_on_drop: false }`
[INFO] [stderr] warning: trait `MakeFallible` is never used
[INFO] [stderr]  --> src/util.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub trait MakeFallible: Iterator + Sized {
[INFO] [stderr]   |           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Convert` is never constructed
[INFO] [stderr]   --> src/util.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Convert<Iter: Iterator, E> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/lib.rs:22:32
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<str> {
[INFO] [stderr]    |                                ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                the 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: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn dns_name_with_dot(name: &str) -> Cow<'_, str> {
[INFO] [stderr]    |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/common.rs:40:19
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn as_ref(&self) -> ControlMessageRef {
[INFO] [stderr]    |                   ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn as_ref(&self) -> ControlMessageRef<'_> {
[INFO] [stderr]    |                                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `libknot` (lib) generated 4 warnings (run `cargo fix --lib -p libknot` to apply 2 suggestions)
[INFO] [stderr] warning: `libknot` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libknot-6139fe93896abfe2)
[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]      Running unittests src/bin/test.rs (/opt/rustwide/target/debug/deps/test-974a2739c89c0b64)
[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 libknot
[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" "fdda51ef85acb1a52daa7f82ae6aa9697a03443c0e947f06f7186441ea1e8faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdda51ef85acb1a52daa7f82ae6aa9697a03443c0e947f06f7186441ea1e8faf", kill_on_drop: false }`
[INFO] [stdout] fdda51ef85acb1a52daa7f82ae6aa9697a03443c0e947f06f7186441ea1e8faf
