[INFO] fetching crate krone 0.1.2...
[INFO] checking krone-0.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate krone 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate krone 0.1.2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate krone 0.1.2
[INFO] finished tweaking crates.io crate krone 0.1.2
[INFO] tweaked toml for crates.io crate krone 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate krone 0.1.2 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.178
[INFO] [stderr]   Downloaded toml v0.7.6
[INFO] [stderr]   Downloaded winnow v0.5.2
[INFO] [stderr]   Downloaded serde_derive v1.0.178
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 072854ce72bec83ce4289351446b65aaf702149aaf762e31437307febeb183a7
[INFO] running `Command { std: "docker" "start" "-a" "072854ce72bec83ce4289351446b65aaf702149aaf762e31437307febeb183a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "072854ce72bec83ce4289351446b65aaf702149aaf762e31437307febeb183a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "072854ce72bec83ce4289351446b65aaf702149aaf762e31437307febeb183a7", kill_on_drop: false }`
[INFO] [stdout] 072854ce72bec83ce4289351446b65aaf702149aaf762e31437307febeb183a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8da2b7c8c891e719e5d149c6b92f760f632c4b6f053f574bd8e0c1e9615c5714
[INFO] running `Command { std: "docker" "start" "-a" "8da2b7c8c891e719e5d149c6b92f760f632c4b6f053f574bd8e0c1e9615c5714", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.178
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde_derive v1.0.178
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking winnow v0.5.2
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking toml_datetime v0.6.3
[INFO] [stderr]     Checking serde_spanned v0.6.3
[INFO] [stderr]     Checking uuid v1.4.1
[INFO] [stderr]     Checking toml_edit v0.19.14
[INFO] [stderr]     Checking toml v0.7.6
[INFO] [stderr]     Checking krone v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `&` without an explicit lifetime name cannot be used here
[INFO] [stdout]   --> src/frontend.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |     const RESET: &str = "\x1b[0m";
[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 a future release!
[INFO] [stdout]    = note: for more information, see issue #115010 <https://github.com/rust-lang/rust/issues/115010>
[INFO] [stdout]    = note: `#[warn(elided_lifetimes_in_associated_constant)]` on by default
[INFO] [stdout] help: use the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 35 |     const RESET: &'static str = "\x1b[0m";
[INFO] [stdout]    |                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `&` without an explicit lifetime name cannot be used here
[INFO] [stdout]   --> src/frontend.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |     const RESET: &str = "\x1b[0m";
[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 a future release!
[INFO] [stdout]    = note: for more information, see issue #115010 <https://github.com/rust-lang/rust/issues/115010>
[INFO] [stdout]    = note: `#[warn(elided_lifetimes_in_associated_constant)]` on by default
[INFO] [stdout] help: use the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 35 |     const RESET: &'static str = "\x1b[0m";
[INFO] [stdout]    |                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "8da2b7c8c891e719e5d149c6b92f760f632c4b6f053f574bd8e0c1e9615c5714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da2b7c8c891e719e5d149c6b92f760f632c4b6f053f574bd8e0c1e9615c5714", kill_on_drop: false }`
[INFO] [stdout] 8da2b7c8c891e719e5d149c6b92f760f632c4b6f053f574bd8e0c1e9615c5714
[INFO] checking krone-0.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate krone 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate krone 0.1.2 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate krone 0.1.2
[INFO] finished tweaking crates.io crate krone 0.1.2
[INFO] tweaked toml for crates.io crate krone 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate krone 0.1.2 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df45c38e9b02f2c34905028e61bb1d98afb28375eeb5092e293a16f4047771be
[INFO] running `Command { std: "docker" "start" "-a" "df45c38e9b02f2c34905028e61bb1d98afb28375eeb5092e293a16f4047771be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df45c38e9b02f2c34905028e61bb1d98afb28375eeb5092e293a16f4047771be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df45c38e9b02f2c34905028e61bb1d98afb28375eeb5092e293a16f4047771be", kill_on_drop: false }`
[INFO] [stdout] df45c38e9b02f2c34905028e61bb1d98afb28375eeb5092e293a16f4047771be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0279066207d08ef6a980b7c3c08976230cdef917fb7db746b73213a3a1bff94b
[INFO] running `Command { std: "docker" "start" "-a" "0279066207d08ef6a980b7c3c08976230cdef917fb7db746b73213a3a1bff94b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde v1.0.178
[INFO] [stderr]    Compiling serde_derive v1.0.178
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking winnow v0.5.2
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/serde_derive-1.0.178/src/lib_precompiled.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         panic!();
[INFO] [stdout]    |         ^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_derive` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0279066207d08ef6a980b7c3c08976230cdef917fb7db746b73213a3a1bff94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0279066207d08ef6a980b7c3c08976230cdef917fb7db746b73213a3a1bff94b", kill_on_drop: false }`
[INFO] [stdout] 0279066207d08ef6a980b7c3c08976230cdef917fb7db746b73213a3a1bff94b