[INFO] fetching crate chemical-balancer 0.0.0...
[INFO] checking chemical-balancer-0.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate chemical-balancer 0.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate chemical-balancer 0.0.0 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 chemical-balancer 0.0.0
[INFO] finished tweaking crates.io crate chemical-balancer 0.0.0
[INFO] tweaked toml for crates.io crate chemical-balancer 0.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages
[INFO] [stderr]       Adding latexify v0.0.1 (latest: v0.1.0)
[INFO] [stderr]       Adding pex v0.1.18 (latest: v0.2.4)
[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 rationalize v0.2.0
[INFO] [stderr]   Downloaded latexify v0.1.0
[INFO] [stderr]   Downloaded latexify v0.0.1
[INFO] [stderr]   Downloaded pex v0.1.18
[INFO] [stderr]   Downloaded mathml-core v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b5e987fe6f79fbac08dcaaf1883a1791f34e609e248a86c76f1814df3b3b5001
[INFO] running `Command { std: "docker" "start" "-a" "b5e987fe6f79fbac08dcaaf1883a1791f34e609e248a86c76f1814df3b3b5001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5e987fe6f79fbac08dcaaf1883a1791f34e609e248a86c76f1814df3b3b5001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e987fe6f79fbac08dcaaf1883a1791f34e609e248a86c76f1814df3b3b5001", kill_on_drop: false }`
[INFO] [stdout] b5e987fe6f79fbac08dcaaf1883a1791f34e609e248a86c76f1814df3b3b5001
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 79a79173633d080ad34ad6dca6cd48ed8015363aadd91a72bd3dc7e3469a2de1
[INFO] running `Command { std: "docker" "start" "-a" "79a79173633d080ad34ad6dca6cd48ed8015363aadd91a72bd3dc7e3469a2de1", kill_on_drop: false }`
[INFO] [stderr]     Checking latexify v0.1.0
[INFO] [stderr]     Checking latexify v0.0.1
[INFO] [stderr]     Checking pex v0.1.18
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rationalize v0.2.0
[INFO] [stderr]     Checking mathml-core v0.1.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking chemical-balancer v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/chem_atom/display.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn fmt<W: Write>(&self, f: &mut W) -> std::fmt::Result {
[INFO] [stdout]   |                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/chem_atom/display.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn fmt<W: Write>(&self, f: &mut W) -> std::fmt::Result {
[INFO] [stdout]   |                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/term/display.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn fmt<W: Write>(&self, f: &mut W) -> std::fmt::Result {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/term/display.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn fmt<W: Write>(&self, f: &mut W) -> std::fmt::Result {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "79a79173633d080ad34ad6dca6cd48ed8015363aadd91a72bd3dc7e3469a2de1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a79173633d080ad34ad6dca6cd48ed8015363aadd91a72bd3dc7e3469a2de1", kill_on_drop: false }`
[INFO] [stdout] 79a79173633d080ad34ad6dca6cd48ed8015363aadd91a72bd3dc7e3469a2de1
[INFO] checking chemical-balancer-0.0.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate chemical-balancer 0.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate chemical-balancer 0.0.0 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 chemical-balancer 0.0.0
[INFO] finished tweaking crates.io crate chemical-balancer 0.0.0
[INFO] tweaked toml for crates.io crate chemical-balancer 0.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 59c9ec133064ed4c2e22fe4aa8ddd5dd045c9c8b2406ce7c311ffec8fcae445b
[INFO] running `Command { std: "docker" "start" "-a" "59c9ec133064ed4c2e22fe4aa8ddd5dd045c9c8b2406ce7c311ffec8fcae445b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59c9ec133064ed4c2e22fe4aa8ddd5dd045c9c8b2406ce7c311ffec8fcae445b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c9ec133064ed4c2e22fe4aa8ddd5dd045c9c8b2406ce7c311ffec8fcae445b", kill_on_drop: false }`
[INFO] [stdout] 59c9ec133064ed4c2e22fe4aa8ddd5dd045c9c8b2406ce7c311ffec8fcae445b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] bb683bf3e22e2f2fe8688b92a75ef3e9fc2ef0a720847aec6adc92cf331962bf
[INFO] running `Command { std: "docker" "start" "-a" "bb683bf3e22e2f2fe8688b92a75ef3e9fc2ef0a720847aec6adc92cf331962bf", kill_on_drop: false }`
[INFO] [stderr]     Checking latexify v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking pex v0.1.18
[INFO] [stderr]     Checking latexify v0.0.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rationalize v0.2.0
[INFO] [stderr]     Checking mathml-core v0.1.7
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/pex-0.1.18/src/helpers/number/mod.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         StopBecause::missing_string("DECIMAL_LITERAL", input.start_offset)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the associated function `missing_string`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]    |
[INFO] [stdout] 18 |         StopBecause::missing_string::<T>("DECIMAL_LITERAL", input.start_offset)?;
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/pex-0.1.18/src/states/builtin.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             StopBecause::missing_string(message, self.start_offset)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the associated function `missing_string`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 145 |             StopBecause::missing_string::<T>(message, self.start_offset)?;
[INFO] [stdout]     |                                        +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pex` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bb683bf3e22e2f2fe8688b92a75ef3e9fc2ef0a720847aec6adc92cf331962bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb683bf3e22e2f2fe8688b92a75ef3e9fc2ef0a720847aec6adc92cf331962bf", kill_on_drop: false }`
[INFO] [stdout] bb683bf3e22e2f2fe8688b92a75ef3e9fc2ef0a720847aec6adc92cf331962bf