[INFO] cloning repository https://github.com/akimasa-l/try_websocket_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akimasa-l/try_websocket_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakimasa-l%2Ftry_websocket_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakimasa-l%2Ftry_websocket_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfd2303066580c198752b7cb1b3d3a6fbf0369aa
[INFO] checking akimasa-l/try_websocket_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakimasa-l%2Ftry_websocket_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akimasa-l/try_websocket_rust 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/akimasa-l/try_websocket_rust
[INFO] finished tweaking git repo https://github.com/akimasa-l/try_websocket_rust
[INFO] tweaked toml for git repo https://github.com/akimasa-l/try_websocket_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/akimasa-l/try_websocket_rust 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9f6464be91cea832a5372642e9ee50b767fd943cf5d9ef10a7975751c1230144
[INFO] running `Command { std: "docker" "start" "-a" "9f6464be91cea832a5372642e9ee50b767fd943cf5d9ef10a7975751c1230144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f6464be91cea832a5372642e9ee50b767fd943cf5d9ef10a7975751c1230144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f6464be91cea832a5372642e9ee50b767fd943cf5d9ef10a7975751c1230144", kill_on_drop: false }`
[INFO] [stdout] 9f6464be91cea832a5372642e9ee50b767fd943cf5d9ef10a7975751c1230144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a0f661fb463f23dd57df7d90c7c0b48d87f4ed1a97144964305e6976af3f66a9
[INFO] running `Command { std: "docker" "start" "-a" "a0f661fb463f23dd57df7d90c7c0b48d87f4ed1a97144964305e6976af3f66a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking ws v0.9.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.18.1
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking websocket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.08s
[INFO] running `Command { std: "docker" "inspect" "a0f661fb463f23dd57df7d90c7c0b48d87f4ed1a97144964305e6976af3f66a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0f661fb463f23dd57df7d90c7c0b48d87f4ed1a97144964305e6976af3f66a9", kill_on_drop: false }`
[INFO] [stdout] a0f661fb463f23dd57df7d90c7c0b48d87f4ed1a97144964305e6976af3f66a9
[INFO] checking akimasa-l/try_websocket_rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakimasa-l%2Ftry_websocket_rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akimasa-l/try_websocket_rust 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/akimasa-l/try_websocket_rust
[INFO] finished tweaking git repo https://github.com/akimasa-l/try_websocket_rust
[INFO] tweaked toml for git repo https://github.com/akimasa-l/try_websocket_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/akimasa-l/try_websocket_rust 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e0cd5fee96d8a433da2a3f19f380e6190c0926cf80578c172f7173ec71447105
[INFO] running `Command { std: "docker" "start" "-a" "e0cd5fee96d8a433da2a3f19f380e6190c0926cf80578c172f7173ec71447105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0cd5fee96d8a433da2a3f19f380e6190c0926cf80578c172f7173ec71447105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0cd5fee96d8a433da2a3f19f380e6190c0926cf80578c172f7173ec71447105", kill_on_drop: false }`
[INFO] [stdout] e0cd5fee96d8a433da2a3f19f380e6190c0926cf80578c172f7173ec71447105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 102d8b6bb5d885ab018841b5a6550c1178603de5c272f8855c98ce202a790a46
[INFO] running `Command { std: "docker" "start" "-a" "102d8b6bb5d885ab018841b5a6550c1178603de5c272f8855c98ce202a790a46", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking ws v0.9.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.18.1
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking websocket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.18s
[INFO] running `Command { std: "docker" "inspect" "102d8b6bb5d885ab018841b5a6550c1178603de5c272f8855c98ce202a790a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "102d8b6bb5d885ab018841b5a6550c1178603de5c272f8855c98ce202a790a46", kill_on_drop: false }`
[INFO] [stdout] 102d8b6bb5d885ab018841b5a6550c1178603de5c272f8855c98ce202a790a46