[INFO] fetching crate credentialhelper 1.0.0...
[INFO] checking credentialhelper-1.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate credentialhelper 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate credentialhelper 1.0.0 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 credentialhelper 1.0.0
[INFO] finished tweaking crates.io crate credentialhelper 1.0.0
[INFO] tweaked toml for crates.io crate credentialhelper 1.0.0 written to /workspace/builds/worker-7-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 10 packages
[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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 20bdcc96b34ec67c01a4bfbf0dfa85061daa06ddaa09f838e5e7cffa78059cce
[INFO] running `Command { std: "docker" "start" "-a" "20bdcc96b34ec67c01a4bfbf0dfa85061daa06ddaa09f838e5e7cffa78059cce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20bdcc96b34ec67c01a4bfbf0dfa85061daa06ddaa09f838e5e7cffa78059cce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20bdcc96b34ec67c01a4bfbf0dfa85061daa06ddaa09f838e5e7cffa78059cce", kill_on_drop: false }`
[INFO] [stdout] 20bdcc96b34ec67c01a4bfbf0dfa85061daa06ddaa09f838e5e7cffa78059cce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e7a3ce29fd00aa6a14f5a16745e2a31e1301f5e3376cf3e1680b2a6024609908
[INFO] running `Command { std: "docker" "start" "-a" "e7a3ce29fd00aa6a14f5a16745e2a31e1301f5e3376cf3e1680b2a6024609908", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking credentialhelper v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.93s
[INFO] running `Command { std: "docker" "inspect" "e7a3ce29fd00aa6a14f5a16745e2a31e1301f5e3376cf3e1680b2a6024609908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a3ce29fd00aa6a14f5a16745e2a31e1301f5e3376cf3e1680b2a6024609908", kill_on_drop: false }`
[INFO] [stdout] e7a3ce29fd00aa6a14f5a16745e2a31e1301f5e3376cf3e1680b2a6024609908
[INFO] checking credentialhelper-1.0.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate credentialhelper 1.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate credentialhelper 1.0.0 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 credentialhelper 1.0.0
[INFO] finished tweaking crates.io crate credentialhelper 1.0.0
[INFO] tweaked toml for crates.io crate credentialhelper 1.0.0 written to /workspace/builds/worker-7-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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a5e3ab7afcfa7631950ae278d93aa9f062cf83093311db3129c06348e075e793
[INFO] running `Command { std: "docker" "start" "-a" "a5e3ab7afcfa7631950ae278d93aa9f062cf83093311db3129c06348e075e793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5e3ab7afcfa7631950ae278d93aa9f062cf83093311db3129c06348e075e793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e3ab7afcfa7631950ae278d93aa9f062cf83093311db3129c06348e075e793", kill_on_drop: false }`
[INFO] [stdout] a5e3ab7afcfa7631950ae278d93aa9f062cf83093311db3129c06348e075e793
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3686ef22cad6670f67f6b0abaff0b37cc8d480006a7f6de827074c842e736e86
[INFO] running `Command { std: "docker" "start" "-a" "3686ef22cad6670f67f6b0abaff0b37cc8d480006a7f6de827074c842e736e86", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking credentialhelper v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]   --> src/client.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 | /                         match GetCredentialsResponse::deserialize(Cursor::new(output.stdout)) {
[INFO] [stdout] 55 | |                             Ok(response) => {
[INFO] [stdout] 56 | |                                 return Ok(response);
[INFO] [stdout] 57 | |                             }
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |                             }
[INFO] [stdout] 63 | |                         }
[INFO] [stdout]    | |_________________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]   --> src/client.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 | /                         match GetCredentialsResponse::deserialize(Cursor::new(output.stdout)) {
[INFO] [stdout] 55 | |                             Ok(response) => {
[INFO] [stdout] 56 | |                                 return Ok(response);
[INFO] [stdout] 57 | |                             }
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |                             }
[INFO] [stdout] 63 | |                         }
[INFO] [stdout]    | |_________________________^ cannot satisfy `_ -> _`
[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 E0284`.
[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 E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `credentialhelper` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `credentialhelper` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3686ef22cad6670f67f6b0abaff0b37cc8d480006a7f6de827074c842e736e86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3686ef22cad6670f67f6b0abaff0b37cc8d480006a7f6de827074c842e736e86", kill_on_drop: false }`
[INFO] [stdout] 3686ef22cad6670f67f6b0abaff0b37cc8d480006a7f6de827074c842e736e86