[INFO] cloning repository https://github.com/MMitsuha/chatting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MMitsuha/chatting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMMitsuha%2Fchatting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMMitsuha%2Fchatting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d31c56bc97add845656850a8e697972f4735c5a9
[INFO] checking MMitsuha/chatting against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMMitsuha%2Fchatting" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MMitsuha/chatting 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/MMitsuha/chatting
[INFO] finished tweaking git repo https://github.com/MMitsuha/chatting
[INFO] tweaked toml for git repo https://github.com/MMitsuha/chatting written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MMitsuha/chatting 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flexi_logger v0.27.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6b3d6bbb4bcd46cce6fbdff362334d7cdf49bfd0bc03bf38f261e3e5012fcc68
[INFO] running `Command { std: "docker" "start" "-a" "6b3d6bbb4bcd46cce6fbdff362334d7cdf49bfd0bc03bf38f261e3e5012fcc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b3d6bbb4bcd46cce6fbdff362334d7cdf49bfd0bc03bf38f261e3e5012fcc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3d6bbb4bcd46cce6fbdff362334d7cdf49bfd0bc03bf38f261e3e5012fcc68", kill_on_drop: false }`
[INFO] [stdout] 6b3d6bbb4bcd46cce6fbdff362334d7cdf49bfd0bc03bf38f261e3e5012fcc68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e6d46a805959ab2fe4fa96350f32b6c190ff69316b7f69f1af987e9f2ce4dc0a
[INFO] running `Command { std: "docker" "start" "-a" "e6d46a805959ab2fe4fa96350f32b6c190ff69316b7f69f1af987e9f2ce4dc0a", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking strsim v0.11.0
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking anstream v0.6.11
[INFO] [stderr]     Checking nu-ansi-term v0.49.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking clap_builder v4.5.0
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking chrono v0.4.33
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling clap_derive v4.5.0
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking flexi_logger v0.27.4
[INFO] [stderr]     Checking clap v4.5.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking chatting v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.63s
[INFO] running `Command { std: "docker" "inspect" "e6d46a805959ab2fe4fa96350f32b6c190ff69316b7f69f1af987e9f2ce4dc0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d46a805959ab2fe4fa96350f32b6c190ff69316b7f69f1af987e9f2ce4dc0a", kill_on_drop: false }`
[INFO] [stdout] e6d46a805959ab2fe4fa96350f32b6c190ff69316b7f69f1af987e9f2ce4dc0a
[INFO] checking MMitsuha/chatting against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMMitsuha%2Fchatting" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MMitsuha/chatting 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/MMitsuha/chatting
[INFO] finished tweaking git repo https://github.com/MMitsuha/chatting
[INFO] tweaked toml for git repo https://github.com/MMitsuha/chatting written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MMitsuha/chatting 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8cb933f8c3717888438843b7649a4f9f6d72e8a754f95fc121728146e3c60f39
[INFO] running `Command { std: "docker" "start" "-a" "8cb933f8c3717888438843b7649a4f9f6d72e8a754f95fc121728146e3c60f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cb933f8c3717888438843b7649a4f9f6d72e8a754f95fc121728146e3c60f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb933f8c3717888438843b7649a4f9f6d72e8a754f95fc121728146e3c60f39", kill_on_drop: false }`
[INFO] [stdout] 8cb933f8c3717888438843b7649a4f9f6d72e8a754f95fc121728146e3c60f39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ea4a156e929615c34814b0e71327391e63e45acb5cfda26d45f74753b40fc276
[INFO] running `Command { std: "docker" "start" "-a" "ea4a156e929615c34814b0e71327391e63e45acb5cfda26d45f74753b40fc276", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking strsim v0.11.0
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking nu-ansi-term v0.49.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking anstream v0.6.11
[INFO] [stderr]     Checking clap_builder v4.5.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking chrono v0.4.33
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling clap_derive v4.5.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking flexi_logger v0.27.4
[INFO] [stderr]     Checking clap v4.5.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking chatting v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.63s
[INFO] running `Command { std: "docker" "inspect" "ea4a156e929615c34814b0e71327391e63e45acb5cfda26d45f74753b40fc276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4a156e929615c34814b0e71327391e63e45acb5cfda26d45f74753b40fc276", kill_on_drop: false }`
[INFO] [stdout] ea4a156e929615c34814b0e71327391e63e45acb5cfda26d45f74753b40fc276