[INFO] fetching crate kkcloud 0.0.4...
[INFO] checking kkcloud-0.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate kkcloud 0.0.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate kkcloud 0.0.4 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 kkcloud 0.0.4
[INFO] finished tweaking crates.io crate kkcloud 0.0.4
[INFO] tweaked toml for crates.io crate kkcloud 0.0.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate kkcloud 0.0.4 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 kkcloud-server v0.1.0
[INFO] [stderr]   Downloaded ruc v0.4.1
[INFO] [stderr]   Downloaded standback v0.2.14
[INFO] [stderr]   Downloaded time-macros-impl v0.1.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
[INFO] [stderr]   Downloaded kkcloud-client v0.1.0
[INFO] [stderr]   Downloaded kkcloud-engine v0.1.0
[INFO] [stderr]   Downloaded kkcloud-framework v0.0.4
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.70
[INFO] [stderr]   Downloaded const_fn v0.4.5
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.70
[INFO] [stderr]   Downloaded serde_derive v1.0.123
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.70
[INFO] [stderr]   Downloaded serde v1.0.123
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded libc v0.2.85
[INFO] [stderr]   Downloaded bumpalo v3.6.0
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded time v0.2.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d02911ed0c2396012f0b78b46e282fea04c0898f878240d0465693eb4f6e9012
[INFO] running `Command { std: "docker" "start" "-a" "d02911ed0c2396012f0b78b46e282fea04c0898f878240d0465693eb4f6e9012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d02911ed0c2396012f0b78b46e282fea04c0898f878240d0465693eb4f6e9012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d02911ed0c2396012f0b78b46e282fea04c0898f878240d0465693eb4f6e9012", kill_on_drop: false }`
[INFO] [stdout] d02911ed0c2396012f0b78b46e282fea04c0898f878240d0465693eb4f6e9012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3ca0367cd7f4884a8abc2429b2b1989f630df5b52a63388cf05a6a07c3fff250
[INFO] running `Command { std: "docker" "start" "-a" "3ca0367cd7f4884a8abc2429b2b1989f630df5b52a63388cf05a6a07c3fff250", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling standback v0.2.14
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking ruc v0.4.1
[INFO] [stderr]     Checking kkcloud-engine v0.1.0
[INFO] [stderr]     Checking kkcloud-client v0.1.0
[INFO] [stderr]     Checking kkcloud-framework v0.0.4
[INFO] [stderr]     Checking kkcloud-server v0.1.0
[INFO] [stderr]     Checking kkcloud v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.13s
[INFO] running `Command { std: "docker" "inspect" "3ca0367cd7f4884a8abc2429b2b1989f630df5b52a63388cf05a6a07c3fff250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ca0367cd7f4884a8abc2429b2b1989f630df5b52a63388cf05a6a07c3fff250", kill_on_drop: false }`
[INFO] [stdout] 3ca0367cd7f4884a8abc2429b2b1989f630df5b52a63388cf05a6a07c3fff250
[INFO] checking kkcloud-0.0.4 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate kkcloud 0.0.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate kkcloud 0.0.4 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 kkcloud 0.0.4
[INFO] finished tweaking crates.io crate kkcloud 0.0.4
[INFO] tweaked toml for crates.io crate kkcloud 0.0.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate kkcloud 0.0.4 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8119ef6b204384297789e8252d7cc4512e94d7bc2f1d9efc8dfa205da2b5c304
[INFO] running `Command { std: "docker" "start" "-a" "8119ef6b204384297789e8252d7cc4512e94d7bc2f1d9efc8dfa205da2b5c304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8119ef6b204384297789e8252d7cc4512e94d7bc2f1d9efc8dfa205da2b5c304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8119ef6b204384297789e8252d7cc4512e94d7bc2f1d9efc8dfa205da2b5c304", kill_on_drop: false }`
[INFO] [stdout] 8119ef6b204384297789e8252d7cc4512e94d7bc2f1d9efc8dfa205da2b5c304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 53055d553b1f22a63b235287932e040b07cc04332b0db217608d56115a49b850
[INFO] running `Command { std: "docker" "start" "-a" "53055d553b1f22a63b235287932e040b07cc04332b0db217608d56115a49b850", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling standback v0.2.14
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking ruc v0.4.1
[INFO] [stderr]     Checking kkcloud-engine v0.1.0
[INFO] [stderr]     Checking kkcloud-client v0.1.0
[INFO] [stderr]     Checking kkcloud-framework v0.0.4
[INFO] [stderr]     Checking kkcloud-server v0.1.0
[INFO] [stderr]     Checking kkcloud v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.97s
[INFO] running `Command { std: "docker" "inspect" "53055d553b1f22a63b235287932e040b07cc04332b0db217608d56115a49b850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53055d553b1f22a63b235287932e040b07cc04332b0db217608d56115a49b850", kill_on_drop: false }`
[INFO] [stdout] 53055d553b1f22a63b235287932e040b07cc04332b0db217608d56115a49b850