[INFO] fetching crate if-newer 0.0.0...
[INFO] checking if-newer-0.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate if-newer 0.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate if-newer 0.0.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate if-newer 0.0.0
[INFO] finished tweaking crates.io crate if-newer 0.0.0
[INFO] tweaked toml for crates.io crate if-newer 0.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate if-newer 0.0.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustversion v1.0.6
[INFO] [stderr]   Downloaded executable-path v1.0.0
[INFO] [stderr]   Downloaded ctor v0.1.21
[INFO] [stderr]   Downloaded anyhow v1.0.53
[INFO] [stderr]   Downloaded cradle v0.2.1
[INFO] [stderr]   Downloaded pretty_assertions v1.0.0
[INFO] [stderr]   Downloaded libc v0.2.114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cfbd82a8150251a0057e7f4f7382a5da6edcb3e282f16efb421a1eedb92339f
[INFO] running `Command { std: "docker" "start" "-a" "0cfbd82a8150251a0057e7f4f7382a5da6edcb3e282f16efb421a1eedb92339f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cfbd82a8150251a0057e7f4f7382a5da6edcb3e282f16efb421a1eedb92339f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cfbd82a8150251a0057e7f4f7382a5da6edcb3e282f16efb421a1eedb92339f", kill_on_drop: false }`
[INFO] [stdout] 0cfbd82a8150251a0057e7f4f7382a5da6edcb3e282f16efb421a1eedb92339f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5283bc37e1a719c7c906022e515169649f6fa4e10268caafb4196137e6876932
[INFO] running `Command { std: "docker" "start" "-a" "5283bc37e1a719c7c906022e515169649f6fa4e10268caafb4196137e6876932", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking executable-path v1.0.0
[INFO] [stderr]     Checking if-newer v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking cradle v0.2.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "5283bc37e1a719c7c906022e515169649f6fa4e10268caafb4196137e6876932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5283bc37e1a719c7c906022e515169649f6fa4e10268caafb4196137e6876932", kill_on_drop: false }`
[INFO] [stdout] 5283bc37e1a719c7c906022e515169649f6fa4e10268caafb4196137e6876932
[INFO] checking if-newer-0.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate if-newer 0.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate if-newer 0.0.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate if-newer 0.0.0
[INFO] finished tweaking crates.io crate if-newer 0.0.0
[INFO] tweaked toml for crates.io crate if-newer 0.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate if-newer 0.0.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f83d6593c8a53b3482819393906822f2e66437dfe4a473c1b2376a2a89c8670d
[INFO] running `Command { std: "docker" "start" "-a" "f83d6593c8a53b3482819393906822f2e66437dfe4a473c1b2376a2a89c8670d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f83d6593c8a53b3482819393906822f2e66437dfe4a473c1b2376a2a89c8670d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f83d6593c8a53b3482819393906822f2e66437dfe4a473c1b2376a2a89c8670d", kill_on_drop: false }`
[INFO] [stdout] f83d6593c8a53b3482819393906822f2e66437dfe4a473c1b2376a2a89c8670d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 224096e86c2c3ead533f9ca1849a14d68db3cc3747da6e32b3c9bfad030b256c
[INFO] running `Command { std: "docker" "start" "-a" "224096e86c2c3ead533f9ca1849a14d68db3cc3747da6e32b3c9bfad030b256c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking executable-path v1.0.0
[INFO] [stderr]     Checking if-newer v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking cradle v0.2.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stdout] error[E0277]: the trait bound `!: cradle::Output` is not satisfied
[INFO] [stdout]    --> tests/simple.rs:35:52
[INFO] [stdout]     |
[INFO] [stdout] 35  |         ("touch", self.temp_dir.path().join(path)).run_result()?;
[INFO] [stdout]     |                                                    ^^^^^^^^^^ the trait `cradle::Output` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `cradle::Output`:
[INFO] [stdout]               ()
[INFO] [stdout]               (A, B)
[INFO] [stdout]               (A, B, C)
[INFO] [stdout]               (A, B, C, D)
[INFO] [stdout]               (A, B, C, D, E)
[INFO] [stdout]               (A, B, C, D, E, F)
[INFO] [stdout]               (A, B, C, D, E, F, G)
[INFO] [stdout]               (A, B, C, D, E, F, G, H)
[INFO] [stdout]             and 14 others
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]     = help: did you intend to use the type `()` here instead?
[INFO] [stdout] note: required by a bound in `run_result`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/cradle-0.2.1/src/input.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn run_result<O>(self) -> Result<O, crate::error::Error>
[INFO] [stdout]     |        ---------- required by a bound in this associated function
[INFO] [stdout] 211 |     where
[INFO] [stdout] 212 |         O: Output,
[INFO] [stdout]     |            ^^^^^^ required by this bound in `Input::run_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `if-newer` (test "simple") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "224096e86c2c3ead533f9ca1849a14d68db3cc3747da6e32b3c9bfad030b256c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "224096e86c2c3ead533f9ca1849a14d68db3cc3747da6e32b3c9bfad030b256c", kill_on_drop: false }`
[INFO] [stdout] 224096e86c2c3ead533f9ca1849a14d68db3cc3747da6e32b3c9bfad030b256c