[INFO] cloning repository https://github.com/perrness/rust-discord-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/perrness/rust-discord-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperrness%2Frust-discord-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperrness%2Frust-discord-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30a691ef63687b918b8f6f73051fe04dc9479798
[INFO] checking perrness/rust-discord-bot against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperrness%2Frust-discord-bot" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/perrness/rust-discord-bot 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/perrness/rust-discord-bot
[INFO] finished tweaking git repo https://github.com/perrness/rust-discord-bot
[INFO] tweaked toml for git repo https://github.com/perrness/rust-discord-bot written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/perrness/rust-discord-bot 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-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] 752fce73f21b891a5fc1cc0c53ba72a2a76e8d87f7ffceef84be6a1e8f0a77c6
[INFO] running `Command { std: "docker" "start" "-a" "752fce73f21b891a5fc1cc0c53ba72a2a76e8d87f7ffceef84be6a1e8f0a77c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "752fce73f21b891a5fc1cc0c53ba72a2a76e8d87f7ffceef84be6a1e8f0a77c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "752fce73f21b891a5fc1cc0c53ba72a2a76e8d87f7ffceef84be6a1e8f0a77c6", kill_on_drop: false }`
[INFO] [stdout] 752fce73f21b891a5fc1cc0c53ba72a2a76e8d87f7ffceef84be6a1e8f0a77c6
[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] 86f0d05312fb56c84fb412c2ed5b25c9d362ef6f0c25d29822831855d7d81266
[INFO] running `Command { std: "docker" "start" "-a" "86f0d05312fb56c84fb412c2ed5b25c9d362ef6f0c25d29822831855d7d81266", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling rustls v0.21.5
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.26
[INFO] [stderr]    Compiling async-trait v0.1.71
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]    Compiling serenity v0.11.6
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking rustls-webpki v0.101.1
[INFO] [stderr]     Checking webpki-roots v0.22.6
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling thiserror-impl v1.0.43
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking time v0.3.23
[INFO] [stderr]     Checking dashmap v5.5.0
[INFO] [stderr]     Checking tungstenite v0.17.3
[INFO] [stderr]     Checking async-tungstenite v0.17.2
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-rustls v0.24.1
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking rust-discord-bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.93s
[INFO] running `Command { std: "docker" "inspect" "86f0d05312fb56c84fb412c2ed5b25c9d362ef6f0c25d29822831855d7d81266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f0d05312fb56c84fb412c2ed5b25c9d362ef6f0c25d29822831855d7d81266", kill_on_drop: false }`
[INFO] [stdout] 86f0d05312fb56c84fb412c2ed5b25c9d362ef6f0c25d29822831855d7d81266
[INFO] checking perrness/rust-discord-bot against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperrness%2Frust-discord-bot" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/perrness/rust-discord-bot 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/perrness/rust-discord-bot
[INFO] finished tweaking git repo https://github.com/perrness/rust-discord-bot
[INFO] tweaked toml for git repo https://github.com/perrness/rust-discord-bot written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/perrness/rust-discord-bot 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-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] 78cb6dba8029bfd6da6ed95723cb4892291d36b23cbed7cc2b75531ab0dac11c
[INFO] running `Command { std: "docker" "start" "-a" "78cb6dba8029bfd6da6ed95723cb4892291d36b23cbed7cc2b75531ab0dac11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78cb6dba8029bfd6da6ed95723cb4892291d36b23cbed7cc2b75531ab0dac11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78cb6dba8029bfd6da6ed95723cb4892291d36b23cbed7cc2b75531ab0dac11c", kill_on_drop: false }`
[INFO] [stdout] 78cb6dba8029bfd6da6ed95723cb4892291d36b23cbed7cc2b75531ab0dac11c
[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] 3d2c88307c82165899321f82713ba55bcb5f07166cb32068fdda311f174fb3d5
[INFO] running `Command { std: "docker" "start" "-a" "3d2c88307c82165899321f82713ba55bcb5f07166cb32068fdda311f174fb3d5", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling rustls v0.21.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling async-trait v0.1.71
[INFO] [stderr]    Compiling syn v2.0.26
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]    Compiling serenity v0.11.6
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking rustls-webpki v0.101.1
[INFO] [stderr]     Checking webpki-roots v0.22.6
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling thiserror-impl v1.0.43
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking time v0.3.23
[INFO] [stderr]     Checking dashmap v5.5.0
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking tungstenite v0.17.3
[INFO] [stderr]     Checking async-tungstenite v0.17.2
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-rustls v0.24.1
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking rust-discord-bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.39s
[INFO] running `Command { std: "docker" "inspect" "3d2c88307c82165899321f82713ba55bcb5f07166cb32068fdda311f174fb3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d2c88307c82165899321f82713ba55bcb5f07166cb32068fdda311f174fb3d5", kill_on_drop: false }`
[INFO] [stdout] 3d2c88307c82165899321f82713ba55bcb5f07166cb32068fdda311f174fb3d5