[INFO] cloning repository https://github.com/TheEggShark/Air-Crab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheEggShark/Air-Crab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheEggShark%2FAir-Crab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheEggShark%2FAir-Crab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c3bee1511b77845f78056d8b6c45c87daaa5cf9
[INFO] checking TheEggShark/Air-Crab against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheEggShark%2FAir-Crab" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheEggShark/Air-Crab 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 git repo https://github.com/TheEggShark/Air-Crab
[INFO] finished tweaking git repo https://github.com/TheEggShark/Air-Crab
[INFO] tweaked toml for git repo https://github.com/TheEggShark/Air-Crab written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TheEggShark/Air-Crab 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d57643539643e469e8e0989e8ec5f1d69a2f4e954d8747c81b223b0b7672651b
[INFO] running `Command { std: "docker" "start" "-a" "d57643539643e469e8e0989e8ec5f1d69a2f4e954d8747c81b223b0b7672651b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d57643539643e469e8e0989e8ec5f1d69a2f4e954d8747c81b223b0b7672651b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d57643539643e469e8e0989e8ec5f1d69a2f4e954d8747c81b223b0b7672651b", kill_on_drop: false }`
[INFO] [stdout] d57643539643e469e8e0989e8ec5f1d69a2f4e954d8747c81b223b0b7672651b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2769a2859eb0b0f17e63ff379a88d3a24402bbb6a0639221720b53bb8e3fe3f2
[INFO] running `Command { std: "docker" "start" "-a" "2769a2859eb0b0f17e63ff379a88d3a24402bbb6a0639221720b53bb8e3fe3f2", kill_on_drop: false }`
[INFO] [stderr]     Checking Air-Crab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]  --> src/song.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Song {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 3 |     pub audio_format: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 4 |     pub channels: u16,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |     pub sample_rate: u32,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 6 |     pub byte_rate: u32,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout] 7 |     pub block_align: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 8 |     pub bits_per_sample: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     pub extra_perams_size: u16
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Song` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]  --> src/song.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Song {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 3 |     pub audio_format: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 4 |     pub channels: u16,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |     pub sample_rate: u32,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 6 |     pub byte_rate: u32,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout] 7 |     pub block_align: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 8 |     pub bits_per_sample: u16,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     pub extra_perams_size: u16
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Song` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             send.send(message);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |             let _ = send.send(message);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             send.send(message);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |             let _ = send.send(message);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 |         file.seek_relative(extra_btye_count.try_into().unwrap());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let _ = file.seek_relative(extra_btye_count.try_into().unwrap());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 |         file.seek_relative(extra_btye_count.try_into().unwrap());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let _ = file.seek_relative(extra_btye_count.try_into().unwrap());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "2769a2859eb0b0f17e63ff379a88d3a24402bbb6a0639221720b53bb8e3fe3f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2769a2859eb0b0f17e63ff379a88d3a24402bbb6a0639221720b53bb8e3fe3f2", kill_on_drop: false }`
[INFO] [stdout] 2769a2859eb0b0f17e63ff379a88d3a24402bbb6a0639221720b53bb8e3fe3f2
[INFO] checking TheEggShark/Air-Crab against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheEggShark%2FAir-Crab" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheEggShark/Air-Crab 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 git repo https://github.com/TheEggShark/Air-Crab
[INFO] finished tweaking git repo https://github.com/TheEggShark/Air-Crab
[INFO] tweaked toml for git repo https://github.com/TheEggShark/Air-Crab written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TheEggShark/Air-Crab 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bc8272decceaec790e8dcbd2ce3dbe265566b7d1027340c1d93f10b740651f45
[INFO] running `Command { std: "docker" "start" "-a" "bc8272decceaec790e8dcbd2ce3dbe265566b7d1027340c1d93f10b740651f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc8272decceaec790e8dcbd2ce3dbe265566b7d1027340c1d93f10b740651f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8272decceaec790e8dcbd2ce3dbe265566b7d1027340c1d93f10b740651f45", kill_on_drop: false }`
[INFO] [stdout] bc8272decceaec790e8dcbd2ce3dbe265566b7d1027340c1d93f10b740651f45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5a46b9448bb237c68e4b67af6a2b12da92563ffd97713c0f6460e5645bfba1fe
[INFO] running `Command { std: "docker" "start" "-a" "5a46b9448bb237c68e4b67af6a2b12da92563ffd97713c0f6460e5645bfba1fe", kill_on_drop: false }`
[INFO] [stderr]     Checking Air-Crab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/main.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 |     thread::spawn(move || {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 16 |     thread::spawn(move || -> /* Type */ {
[INFO] [stdout]    |                           +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/main.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 |     thread::spawn(move || {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 16 |     thread::spawn(move || -> /* Type */ {
[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 E0283`.
[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 E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Air-Crab` (bin "Air-Crab") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `Air-Crab` (bin "Air-Crab" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5a46b9448bb237c68e4b67af6a2b12da92563ffd97713c0f6460e5645bfba1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a46b9448bb237c68e4b67af6a2b12da92563ffd97713c0f6460e5645bfba1fe", kill_on_drop: false }`
[INFO] [stdout] 5a46b9448bb237c68e4b67af6a2b12da92563ffd97713c0f6460e5645bfba1fe