[INFO] fetching crate cradle 0.2.2...
[INFO] checking cradle-0.2.2 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate cradle 0.2.2 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cradle 0.2.2 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8eea84f6e9136c07fe2eb6702ce6266f15f78d55adccc84835d7315ae8796ed
[INFO] running `Command { std: "docker" "start" "-a" "e8eea84f6e9136c07fe2eb6702ce6266f15f78d55adccc84835d7315ae8796ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8eea84f6e9136c07fe2eb6702ce6266f15f78d55adccc84835d7315ae8796ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8eea84f6e9136c07fe2eb6702ce6266f15f78d55adccc84835d7315ae8796ed", kill_on_drop: false }`
[INFO] [stdout] e8eea84f6e9136c07fe2eb6702ce6266f15f78d55adccc84835d7315ae8796ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ded44d8f364da3399127162f90cbe89b6679580a35f5a0499cd4d0430c41eb5a
[INFO] running `Command { std: "docker" "start" "-a" "ded44d8f364da3399127162f90cbe89b6679580a35f5a0499cd4d0430c41eb5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking executable-path v1.0.0
[INFO] [stderr]     Checking unindent v0.1.8
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking cradle v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: 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]    = 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: 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]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout]    = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]    = 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: 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]    = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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]     = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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]     = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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]     = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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]     = note: this error originates in the macro `run_result` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 203 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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] 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] error: 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]     = 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: 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] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 236 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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] 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] error: 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]     = 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: 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] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 280 |             (WHICH, "ls").run_result::<()>()?;
[INFO] [stdout]     |                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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]     = 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: 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] 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] [stderr] error: could not compile `cradle` (test "integration") due to 24 previous errors; 2 warnings emitted
[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] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ded44d8f364da3399127162f90cbe89b6679580a35f5a0499cd4d0430c41eb5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded44d8f364da3399127162f90cbe89b6679580a35f5a0499cd4d0430c41eb5a", kill_on_drop: false }`
[INFO] [stdout] ded44d8f364da3399127162f90cbe89b6679580a35f5a0499cd4d0430c41eb5a
