[INFO] cloning repository https://github.com/sinlov/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinlov/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinlov%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinlov%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 971c527378eac33178764ca5417947ab47aad08e
[INFO] checking sinlov/rust_playground against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinlov%2Frust_playground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinlov/rust_playground 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 git repo https://github.com/sinlov/rust_playground
[INFO] finished tweaking git repo https://github.com/sinlov/rust_playground
[INFO] tweaked toml for git repo https://github.com/sinlov/rust_playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sinlov/rust_playground 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_with_macros v3.7.0
[INFO] [stderr]   Downloaded ahash v0.8.10
[INFO] [stderr]   Downloaded cc v1.0.88
[INFO] [stderr]   Downloaded serde_with v3.7.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef986b0e06c8f7c301a1b40f1b6e23f46e3742408b2eee702d3c87cd0557db07
[INFO] running `Command { std: "docker" "start" "-a" "ef986b0e06c8f7c301a1b40f1b6e23f46e3742408b2eee702d3c87cd0557db07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef986b0e06c8f7c301a1b40f1b6e23f46e3742408b2eee702d3c87cd0557db07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef986b0e06c8f7c301a1b40f1b6e23f46e3742408b2eee702d3c87cd0557db07", kill_on_drop: false }`
[INFO] [stdout] ef986b0e06c8f7c301a1b40f1b6e23f46e3742408b2eee702d3c87cd0557db07
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77ac3301e7c38762473fa6615e2d3f6bbd4ecf0c34a5d9d705eec157b17a407d
[INFO] running `Command { std: "docker" "start" "-a" "77ac3301e7c38762473fa6615e2d3f6bbd4ecf0c34a5d9d705eec157b17a407d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling ahash v0.8.10
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]     Checking indexmap v2.2.5
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling rust_playground v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling cc v1.0.88
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling darling_core v0.20.8
[INFO] [stderr]    Compiling actix-router v0.5.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling actix-macros v0.2.4
[INFO] [stderr]    Compiling actix-web-codegen v4.2.2
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking actix-rt v2.9.0
[INFO] [stderr]     Checking actix-server v2.3.0
[INFO] [stderr]     Checking actix-codec v0.5.2
[INFO] [stderr]     Checking h2 v0.3.24
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]    Compiling darling v0.20.8
[INFO] [stderr]    Compiling serde_with_macros v3.7.0
[INFO] [stderr]    Compiling zstd-safe v7.0.0
[INFO] [stderr]     Checking zstd v0.13.0
[INFO] [stderr]     Checking serde_with v3.7.0
[INFO] [stderr]     Checking actix-http v3.6.0
[INFO] [stderr]     Checking actix-web v4.5.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.17s
[INFO] running `Command { std: "docker" "inspect" "77ac3301e7c38762473fa6615e2d3f6bbd4ecf0c34a5d9d705eec157b17a407d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77ac3301e7c38762473fa6615e2d3f6bbd4ecf0c34a5d9d705eec157b17a407d", kill_on_drop: false }`
[INFO] [stdout] 77ac3301e7c38762473fa6615e2d3f6bbd4ecf0c34a5d9d705eec157b17a407d
[INFO] checking sinlov/rust_playground against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinlov%2Frust_playground" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinlov/rust_playground 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 git repo https://github.com/sinlov/rust_playground
[INFO] finished tweaking git repo https://github.com/sinlov/rust_playground
[INFO] tweaked toml for git repo https://github.com/sinlov/rust_playground written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sinlov/rust_playground 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] 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7af0325558fd0510bfa50f977485b30c962996b0767599963d5758f048ef3d4c
[INFO] running `Command { std: "docker" "start" "-a" "7af0325558fd0510bfa50f977485b30c962996b0767599963d5758f048ef3d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7af0325558fd0510bfa50f977485b30c962996b0767599963d5758f048ef3d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7af0325558fd0510bfa50f977485b30c962996b0767599963d5758f048ef3d4c", kill_on_drop: false }`
[INFO] [stdout] 7af0325558fd0510bfa50f977485b30c962996b0767599963d5758f048ef3d4c
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5647925498e8a2c1c0bf1b039c26a3d0f181fc395aa06f49efde939e8cf19807
[INFO] running `Command { std: "docker" "start" "-a" "5647925498e8a2c1c0bf1b039c26a3d0f181fc395aa06f49efde939e8cf19807", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling ahash v0.8.10
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]     Checking indexmap v2.2.5
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling rust_playground v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling cc v1.0.88
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling actix-router v0.5.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling darling_core v0.20.8
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking actix-rt v2.9.0
[INFO] [stderr]     Checking actix-server v2.3.0
[INFO] [stderr]    Compiling actix-macros v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling actix-web-codegen v4.2.2
[INFO] [stderr]     Checking actix-codec v0.5.2
[INFO] [stderr]     Checking h2 v0.3.24
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]    Compiling zstd-safe v7.0.0
[INFO] [stderr]     Checking zstd v0.13.0
[INFO] [stderr]    Compiling darling v0.20.8
[INFO] [stderr]    Compiling serde_with_macros v3.7.0
[INFO] [stderr]     Checking serde_with v3.7.0
[INFO] [stderr]     Checking actix-http v3.6.0
[INFO] [stderr]     Checking actix-web v4.5.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.99s
[INFO] running `Command { std: "docker" "inspect" "5647925498e8a2c1c0bf1b039c26a3d0f181fc395aa06f49efde939e8cf19807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5647925498e8a2c1c0bf1b039c26a3d0f181fc395aa06f49efde939e8cf19807", kill_on_drop: false }`
[INFO] [stdout] 5647925498e8a2c1c0bf1b039c26a3d0f181fc395aa06f49efde939e8cf19807