[INFO] fetching crate claym 0.5.1...
[INFO] checking claym-0.5.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate claym 0.5.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate claym 0.5.1 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 claym 0.5.1
[INFO] finished tweaking crates.io crate claym 0.5.1
[INFO] tweaked toml for crates.io crate claym 0.5.1 written to /workspace/builds/worker-0-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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cec73c986cad9da1f4d7b84943bd1577f59264a6c643e56d52cab54383834804
[INFO] running `Command { std: "docker" "start" "-a" "cec73c986cad9da1f4d7b84943bd1577f59264a6c643e56d52cab54383834804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec73c986cad9da1f4d7b84943bd1577f59264a6c643e56d52cab54383834804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec73c986cad9da1f4d7b84943bd1577f59264a6c643e56d52cab54383834804", kill_on_drop: false }`
[INFO] [stdout] cec73c986cad9da1f4d7b84943bd1577f59264a6c643e56d52cab54383834804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e6d4bd20e78ea0a4f9f567e8b5e15db08d7ad4f47b12de42629c955bac593674
[INFO] running `Command { std: "docker" "start" "-a" "e6d4bd20e78ea0a4f9f567e8b5e15db08d7ad4f47b12de42629c955bac593674", kill_on_drop: false }`
[INFO] [stderr]     Checking claym v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "e6d4bd20e78ea0a4f9f567e8b5e15db08d7ad4f47b12de42629c955bac593674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d4bd20e78ea0a4f9f567e8b5e15db08d7ad4f47b12de42629c955bac593674", kill_on_drop: false }`
[INFO] [stdout] e6d4bd20e78ea0a4f9f567e8b5e15db08d7ad4f47b12de42629c955bac593674
[INFO] checking claym-0.5.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate claym 0.5.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate claym 0.5.1 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 claym 0.5.1
[INFO] finished tweaking crates.io crate claym 0.5.1
[INFO] tweaked toml for crates.io crate claym 0.5.1 written to /workspace/builds/worker-0-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] 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9234210263c8cad2814a6ddb801431e0108bc60497d5aebf0e150080e8f5778
[INFO] running `Command { std: "docker" "start" "-a" "f9234210263c8cad2814a6ddb801431e0108bc60497d5aebf0e150080e8f5778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9234210263c8cad2814a6ddb801431e0108bc60497d5aebf0e150080e8f5778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9234210263c8cad2814a6ddb801431e0108bc60497d5aebf0e150080e8f5778", kill_on_drop: false }`
[INFO] [stdout] f9234210263c8cad2814a6ddb801431e0108bc60497d5aebf0e150080e8f5778
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 998bc61b969b130152ee1611aad9165d26d7c2fb04094638f2099eebe80ca4cf
[INFO] running `Command { std: "docker" "start" "-a" "998bc61b969b130152ee1611aad9165d26d7c2fb04094638f2099eebe80ca4cf", kill_on_drop: false }`
[INFO] [stderr]     Checking claym v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/assert_err.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |         assert_err!(Ok(true));
[INFO] [stdout]    |                     ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 40 |         assert_err!(Ok::<bool, E>(true));
[INFO] [stdout]    |                       +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/assert_err.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |         assert_err!(Ok(true), "i'm confused");
[INFO] [stdout]    |                     ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 46 |         assert_err!(Ok::<bool, E>(true), "i'm confused");
[INFO] [stdout]    |                       +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/assert_ready_err.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 46 |         assert_ready_err!(Poll::Ready(Ok(true)));
[INFO] [stdout]    |                                       ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 46 |         assert_ready_err!(Poll::Ready(Ok::<bool, E>(true)));
[INFO] [stdout]    |                                         +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/assert_ready_err.rs:54:39
[INFO] [stdout]    |
[INFO] [stdout] 54 |         assert_ready_err!(Poll::Ready(Ok(true)), "i'm confused");
[INFO] [stdout]    |                                       ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 54 |         assert_ready_err!(Poll::Ready(Ok::<bool, E>(true)), "i'm confused");
[INFO] [stdout]    |                                         +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `claym` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "998bc61b969b130152ee1611aad9165d26d7c2fb04094638f2099eebe80ca4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "998bc61b969b130152ee1611aad9165d26d7c2fb04094638f2099eebe80ca4cf", kill_on_drop: false }`
[INFO] [stdout] 998bc61b969b130152ee1611aad9165d26d7c2fb04094638f2099eebe80ca4cf