[INFO] cloning repository https://github.com/Atte/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/Atte/discord-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtte%2Fdiscord-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtte%2Fdiscord-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd6072213c27f9ff790f35a99336b7af8f7e01e9
[INFO] checking Atte/discord-bot against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtte%2Fdiscord-bot" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Atte/discord-bot on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Atte/discord-bot
[INFO] finished tweaking git repo https://github.com/Atte/discord-bot
[INFO] tweaked toml for git repo https://github.com/Atte/discord-bot written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Atte/discord-bot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_with v1.9.0
[INFO] [stderr]   Downloaded mongodb v2.0.0-alpha.1
[INFO] [stderr]   Downloaded meval v0.2.0
[INFO] [stderr]   Downloaded command_attr v0.3.5
[INFO] [stderr]   Downloaded stable-eyre v0.2.2
[INFO] [stderr]   Downloaded tabwriter v1.2.1
[INFO] [stderr]   Downloaded os_info v3.0.4
[INFO] [stderr]   Downloaded serde-aux v2.2.0
[INFO] [stderr]   Downloaded serenity v0.10.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3a4513ccadd69e1dbeac83a1c7c7d0b24c6ca4a02f8cd4e324829e48c2baca2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3a4513ccadd69e1dbeac83a1c7c7d0b24c6ca4a02f8cd4e324829e48c2baca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3a4513ccadd69e1dbeac83a1c7c7d0b24c6ca4a02f8cd4e324829e48c2baca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a4513ccadd69e1dbeac83a1c7c7d0b24c6ca4a02f8cd4e324829e48c2baca2", kill_on_drop: false }`
[INFO] [stdout] b3a4513ccadd69e1dbeac83a1c7c7d0b24c6ca4a02f8cd4e324829e48c2baca2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 346e69154e99f6ed7ae1380c7be53005eef1d4dedfd4e0b9bcc33977ddea9f69
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "346e69154e99f6ed7ae1380c7be53005eef1d4dedfd4e0b9bcc33977ddea9f69", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking itoa v0.4.7
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[INFO] [stderr]    Compiling semver-parser v0.7.0
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[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking opaque-debug v0.3.0
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[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking cfg-if v0.1.10
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[INFO] [stderr]    Compiling serenity v0.10.5
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[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking version_check v0.9.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking tabwriter v1.2.1
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[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking os_info v3.0.4
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking plotters-bitmap v0.3.0
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking sha-1 v0.9.6
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking meval v0.2.0
[INFO] [stderr]     Checking pbkdf2 v0.7.5
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]     Checking idna v0.2.3
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[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking socket2 v0.4.0
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[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking freetype v0.4.1
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking parking_lot v0.11.1
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[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
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[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking webpki-roots v0.20.0
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling command_attr v0.3.5
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling typed-builder v0.4.1
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling serde_with_macros v1.4.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking trust-dns-proto v0.20.2
[INFO] [stderr]     Checking tokio-stream v0.1.5
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking async-tungstenite v0.11.0
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking trust-dns-resolver v0.20.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde_with v1.9.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking hyper v0.14.7
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking bson v1.2.2
[INFO] [stderr]     Checking serde-aux v2.2.0
[INFO] [stderr]     Checking hyper-rustls v0.22.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stderr]     Checking mongodb v2.0.0-alpha.1
[INFO] [stderr]     Checking discord-bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `first_entry`
[INFO] [stdout]   --> src/serialization.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn first_entry<'de, T, D>(deserializer: D) -> Result<Option<T>, D::Error>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_entry`
[INFO] [stdout]   --> src/serialization.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn first_entry<'de, T, D>(deserializer: D) -> Result<Option<T>, D::Error>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "346e69154e99f6ed7ae1380c7be53005eef1d4dedfd4e0b9bcc33977ddea9f69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "346e69154e99f6ed7ae1380c7be53005eef1d4dedfd4e0b9bcc33977ddea9f69", kill_on_drop: false }`
[INFO] [stdout] 346e69154e99f6ed7ae1380c7be53005eef1d4dedfd4e0b9bcc33977ddea9f69