[INFO] fetching crate cradle 0.2.2...
[INFO] testing cradle-0.2.2 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate cradle 0.2.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate cradle 0.2.2
[INFO] finished tweaking crates.io crate cradle 0.2.2
[INFO] tweaked toml for crates.io crate cradle 0.2.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cradle 0.2.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cradle 0.2.2 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded unindent v0.1.8
[INFO] [stderr]   Downloaded pretty_assertions v1.2.1
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded ctor v0.1.22
[INFO] [stderr]   Downloaded executable-path v1.0.0
[INFO] [stderr]   Downloaded unicode-xid v0.2.3
[INFO] [stderr]   Downloaded gag v0.1.10
[INFO] [stderr]   Downloaded syn v1.0.92
[INFO] [stderr]   Downloaded nix v0.22.3
[INFO] [stderr]   Downloaded libc v0.2.125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8
[INFO] running `Command { std: "docker" "start" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling executable-path v1.0.0
[INFO] [stderr]    Compiling pretty_assertions v1.2.1
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> tests/integration.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn test() -> Result<(), Error> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]   --> tests/integration.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         run_result!(WHICH, "ls")?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> tests/integration.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn test() -> Result<(), Error> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]   --> tests/integration.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn test() -> MyResult<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         run_result!(WHICH, "ls")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn test() -> MyResult<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn test() -> Result<(), Error> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         run_result!(WHICH, "ls")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:179:5
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn test() -> Result<(), Error> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 180 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |         fn test() -> Result<(), Error> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:203:27
[INFO] [stdout]     |
[INFO] [stdout] 203 |             (WHICH, "ls").run_result()?;
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 203 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |         fn test() -> Result<(), Error> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:215:39
[INFO] [stdout]     |
[INFO] [stdout] 215 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stdout]     |                                       ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 215 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stdout]     |                                                 ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         fn test() -> MyResult<()> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:236:27
[INFO] [stdout]     |
[INFO] [stdout] 236 |             (WHICH, "ls").run_result()?;
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 236 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 249 |         fn test() -> MyResult<()> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:250:39
[INFO] [stdout]     |
[INFO] [stdout] 250 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stdout]     |                                       ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 250 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stdout]     |                                                 ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |         fn test() -> Result<(), Error> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:280:27
[INFO] [stdout]     |
[INFO] [stdout] 280 |             (WHICH, "ls").run_result()?;
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 280 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> tests/integration.rs:311:9
[INFO] [stdout]     |
[INFO] [stdout] 311 |         fn test() -> Result<(), Error> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stdout]    --> tests/integration.rs:312:39
[INFO] [stdout]     |
[INFO] [stdout] 312 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stdout]     |                                       ^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 312 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stdout]     |                                                 ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/integration.rs:138:16
[INFO] [stdout]     |
[INFO] [stdout] 138 |         Cradle(cradle::Error),
[INFO] [stdout]     |         ------ ^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 138 -         Cradle(cradle::Error),
[INFO] [stdout] 138 +         Cradle(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/integration.rs:270:20
[INFO] [stdout]     |
[INFO] [stdout] 270 |             Cradle(cradle::Error),
[INFO] [stdout]     |             ------ ^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 270 -             Cradle(cradle::Error),
[INFO] [stdout] 270 +             Cradle(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> tests/integration.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn test() -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]   --> tests/integration.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         run_result!(WHICH, "ls")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stderr]    = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> tests/integration.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn test() -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]   --> tests/integration.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]    = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn test() -> MyResult<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         run_result!(WHICH, "ls")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn test() -> MyResult<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn test() -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         run_result!(WHICH, "ls")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:179:5
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn test() -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:180:9
[INFO] [stderr]     |
[INFO] [stderr] 180 |         run_result!(WHICH, "does-not-exist")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = note: this warning originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:201:9
[INFO] [stderr]     |
[INFO] [stderr] 201 |         fn test() -> Result<(), Error> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:203:27
[INFO] [stderr]     |
[INFO] [stderr] 203 |             (WHICH, "ls").run_result()?;
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 203 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stderr]     |                                     ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         fn test() -> Result<(), Error> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:215:39
[INFO] [stderr]     |
[INFO] [stderr] 215 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stderr]     |                                       ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 215 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stderr]     |                                                 ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |         fn test() -> MyResult<()> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:236:27
[INFO] [stderr]     |
[INFO] [stderr] 236 |             (WHICH, "ls").run_result()?;
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 236 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stderr]     |                                     ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |         fn test() -> MyResult<()> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:250:39
[INFO] [stderr]     |
[INFO] [stderr] 250 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stderr]     |                                       ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 250 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stderr]     |                                                 ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:279:9
[INFO] [stderr]     |
[INFO] [stderr] 279 |         fn test() -> Result<(), Error> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:280:27
[INFO] [stderr]     |
[INFO] [stderr] 280 |             (WHICH, "ls").run_result()?;
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 280 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stderr]     |                                     ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> tests/integration.rs:311:9
[INFO] [stderr]     |
[INFO] [stderr] 311 |         fn test() -> Result<(), Error> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: cradle::Output` will fail
[INFO] [stderr]    --> tests/integration.rs:312:39
[INFO] [stderr]     |
[INFO] [stderr] 312 |             (WHICH, "does-not-exist").run_result()?;
[INFO] [stderr]     |                                       ^^^^^^^^^^
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 312 |             (WHICH, "does-not-exist").run_result::<()>()?;
[INFO] [stderr]     |                                                 ++++++
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> tests/integration.rs:138:16
[INFO] [stderr]     |
[INFO] [stderr] 138 |         Cradle(cradle::Error),
[INFO] [stderr]     |         ------ ^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 138 -         Cradle(cradle::Error),
[INFO] [stderr] 138 +         Cradle(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> tests/integration.rs:270:20
[INFO] [stderr]     |
[INFO] [stderr] 270 |             Cradle(cradle::Error),
[INFO] [stderr]     |             ------ ^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 270 -             Cradle(cradle::Error),
[INFO] [stderr] 270 +             Cradle(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `cradle` (test "integration") generated 14 warnings (run `cargo fix --test "integration" -p cradle` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cradle-a12b67ef14ada1c6)
[INFO] [stdout] 
[INFO] [stdout] running 141 tests
[INFO] [stdout] test error::tests::invalid_utf8_to_stdout_has_source ... ok
[INFO] [stdout] test error::tests::english_list::one ... ok
[INFO] [stdout] test error::tests::english_list::four ... ok
[INFO] [stdout] test macros::tests::tuple_up::percent_shortcut_with_multiple_values ... ok
[INFO] [stdout] test macros::tests::tuple_up::percent_shortcut ... ok
[INFO] [stdout] test error::tests::english_list::two ... ok
[INFO] [stdout] test macros::tests::tuple_up::percent_shortcut_with_preceeding_values ... ok
[INFO] [stdout] test macros::tests::tuple_up::percent_shortcut_with_subsequent_values ... ok
[INFO] [stdout] test macros::tests::tuple_up::three_values ... ok
[INFO] [stdout] test macros::tests::tuple_up::two_values ... ok
[INFO] [stderr] + echo foo
[INFO] [stdout] test error::tests::english_list::three ... ok
[INFO] [stdout] test macros::tests::tuple_up::nested_tuples ... ok
[INFO] [stdout] test error::tests::invalid_utf8_to_stderr_has_source ... ok
[INFO] [stdout] test macros::tests::tuple_up::one_value ... ok
[INFO] [stdout] test tests::allows_to_execute_a_command ... ok
[INFO] [stdout] test tests::allows_to_retrieve_stdout ... ok
[INFO] [stdout] test tests::capturing_stdout::trimmed::does_not_modify_output_without_whitespace ... ok
[INFO] [stdout] test tests::bool_output::success_exit_status_is_true ... ok
[INFO] [stdout] test tests::arguments_can_be_given_as_references ... ok
[INFO] [stdout] test tests::bool_output::failure_exit_status_is_false ... ok
[INFO] [stdout] test tests::capturing_stdout::trimmed::trims_leading_whitespace ... ok
[INFO] [stdout] test tests::capturing_stdout::untrimmed::does_not_trim_leading_whitespace ... ok
[INFO] [stdout] test tests::capturing_stdout::trimmed::trims_trailing_whitespace ... ok
[INFO] [stdout] test tests::current_dir::sets_the_working_directory ... ok
[INFO] [stderr] + cargo build --bin test_executables_helper --features test_executables
[INFO] [stdout] test tests::capturing_stdout::trimmed::does_not_relay_stdout ... ok
[INFO] [stdout] test tests::capturing_stdout::untrimmed::does_not_trim_trailing_newline ... ok
[INFO] [stdout] test tests::command_and_argument_as_separate_ref_str ... ok
[INFO] [stdout] test tests::current_dir::works_for_other_types ... ok
[INFO] [stdout] test tests::capturing_stdout::trimmed::does_not_remove_whitespace_within_output ... ok
[INFO] [stdout] test tests::capturing_stdout::untrimmed::does_not_relay_stdout ... ok
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stdout] test tests::bool_output::io_error_panics - should panic ... ok
[INFO] [stdout] test tests::errors::panics_by_default::combine_panics_with_other_outputs - should panic ... ok
[INFO] [stdout] test tests::errors::panics_by_default::executable_cannot_be_found - should panic ... ok
[INFO] [stdout] test tests::errors::panics_by_default::includes_full_command_on_io_errors - should panic ... ok
[INFO] [stdout] test tests::errors::panics_by_default::includes_full_command_on_non_zero_exit_codes - should panic ... ok
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling nix v0.22.3
[INFO] [stderr]    Compiling gag v0.1.10
[INFO] [stderr]    Compiling cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.53s
[INFO] [stdout] test tests::environment_variables::child_processes_inherit_the_environment ... ok
[INFO] [stdout] test tests::environment_variables::variables_are_overwritten_by_subsequent_variables_with_the_same_name ... ok
[INFO] [stdout] test tests::environment_variables::variables_can_be_set_to_the_empty_string ... ok
[ERROR] error running command: stream did not contain valid UTF-8
[INFO] running `Command { std: "docker" "inspect" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8", kill_on_drop: false }`
[INFO] [stdout] 48ba196cd3f28c3973c6a0f4e8a3dec3bc632d50c2ac016601ae56ee9ff0d8c8
