[INFO] fetching crate discord-snowflake-info 1.2.1...
[INFO] checking discord-snowflake-info-1.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate discord-snowflake-info 1.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate discord-snowflake-info 1.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discord-snowflake-info 1.2.1
[INFO] finished tweaking crates.io crate discord-snowflake-info 1.2.1
[INFO] tweaked toml for crates.io crate discord-snowflake-info 1.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate discord-snowflake-info 1.2.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chrono v0.4.13
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10156880274b365a251626f8c1d5f953be372c40a451ec69eb45bb86e771b203
[INFO] running `Command { std: "docker" "start" "-a" "10156880274b365a251626f8c1d5f953be372c40a451ec69eb45bb86e771b203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10156880274b365a251626f8c1d5f953be372c40a451ec69eb45bb86e771b203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10156880274b365a251626f8c1d5f953be372c40a451ec69eb45bb86e771b203", kill_on_drop: false }`
[INFO] [stdout] 10156880274b365a251626f8c1d5f953be372c40a451ec69eb45bb86e771b203
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d54a2db276da824bbb037dcc6c96485bbc4166ddec26d8e4e846c9a5fb5ee7
[INFO] running `Command { std: "docker" "start" "-a" "a9d54a2db276da824bbb037dcc6c96485bbc4166ddec26d8e4e846c9a5fb5ee7", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking discord-snowflake-info v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new_u64` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Snowflake {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub fn new_u64(raw: u64) -> Option<Self> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_u64` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Snowflake {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub fn new_u64(raw: u64) -> Option<Self> {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "a9d54a2db276da824bbb037dcc6c96485bbc4166ddec26d8e4e846c9a5fb5ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d54a2db276da824bbb037dcc6c96485bbc4166ddec26d8e4e846c9a5fb5ee7", kill_on_drop: false }`
[INFO] [stdout] a9d54a2db276da824bbb037dcc6c96485bbc4166ddec26d8e4e846c9a5fb5ee7
[INFO] checking discord-snowflake-info-1.2.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate discord-snowflake-info 1.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate discord-snowflake-info 1.2.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discord-snowflake-info 1.2.1
[INFO] finished tweaking crates.io crate discord-snowflake-info 1.2.1
[INFO] tweaked toml for crates.io crate discord-snowflake-info 1.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate discord-snowflake-info 1.2.1 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc5dc40175f4974d18806538fc3e186beeaaee03288fd9cc47f59a31df50fea5
[INFO] running `Command { std: "docker" "start" "-a" "fc5dc40175f4974d18806538fc3e186beeaaee03288fd9cc47f59a31df50fea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc5dc40175f4974d18806538fc3e186beeaaee03288fd9cc47f59a31df50fea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5dc40175f4974d18806538fc3e186beeaaee03288fd9cc47f59a31df50fea5", kill_on_drop: false }`
[INFO] [stdout] fc5dc40175f4974d18806538fc3e186beeaaee03288fd9cc47f59a31df50fea5
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aa7fe45007f549a309496040172ecf9ddca61f3303e947052659c0de90d6a92
[INFO] running `Command { std: "docker" "start" "-a" "8aa7fe45007f549a309496040172ecf9ddca61f3303e947052659c0de90d6a92", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chrono-0.4.13/src/format/parse.rs:489:21
[INFO] [stdout]     |
[INFO] [stdout] 489 |                     Err(INVALID)?;
[INFO] [stdout]     |                     ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 489 |                     Err::<T, format::ParseError>(INVALID)?;
[INFO] [stdout]     |                        +++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chrono` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8aa7fe45007f549a309496040172ecf9ddca61f3303e947052659c0de90d6a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aa7fe45007f549a309496040172ecf9ddca61f3303e947052659c0de90d6a92", kill_on_drop: false }`
[INFO] [stdout] 8aa7fe45007f549a309496040172ecf9ddca61f3303e947052659c0de90d6a92