[INFO] cloning repository https://github.com/i-m-aditya/bittorent-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/i-m-aditya/bittorent-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi-m-aditya%2Fbittorent-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi-m-aditya%2Fbittorent-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f7f13f00d6b5c71173ec24709fa11b9be9ec562
[INFO] checking i-m-aditya/bittorent-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fi-m-aditya%2Fbittorent-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/i-m-aditya/bittorent-rust 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/i-m-aditya/bittorent-rust
[INFO] finished tweaking git repo https://github.com/i-m-aditya/bittorent-rust
[INFO] tweaked toml for git repo https://github.com/i-m-aditya/bittorent-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/i-m-aditya/bittorent-rust 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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 }`
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[INFO] [stdout] warning: unused import: `sha1::digest::typenum::U256`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha1::digest::typenum::U256;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_bencode` is imported redundantly
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_bencode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ the item `serde_bencode` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha1::digest::typenum::U256`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha1::digest::typenum::U256;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_bencode` is imported redundantly
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_bencode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ the item `serde_bencode` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashed`
[INFO] [stdout]    --> src/main.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |             let hashed = hash_bytes(&piece);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece_hash`
[INFO] [stdout]    --> src/main.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |             let piece_hash: Vec<u8> = torrent_file.info.pieces.into_iter().take(20).collect();
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_piece_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashed`
[INFO] [stdout]    --> src/main.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |             let hashed = hash_bytes(&piece);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece_hash`
[INFO] [stdout]    --> src/main.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |             let piece_hash: Vec<u8> = torrent_file.info.pieces.into_iter().take(20).collect();
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_piece_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Choke`, `NotInterested`, `Have`, and `Cancel` are never constructed
[INFO] [stdout]   --> src/tcp.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum PeerMessage {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 14 |     Choke,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     NotInterested,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 18 |     Have,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     Cancel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `CHUNKSIZE` should have a snake case name
[INFO] [stdout]    --> src/main.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let CHUNKSIZE = 16 * 1024;
[INFO] [stdout]     |                 ^^^^^^^^^ help: convert the identifier to snake case: `chunksize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Choke`, `NotInterested`, `Have`, and `Cancel` are never constructed
[INFO] [stdout]   --> src/tcp.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum PeerMessage {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 14 |     Choke,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     NotInterested,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 18 |     Have,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     Cancel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `CHUNKSIZE` should have a snake case name
[INFO] [stdout]    --> src/main.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let CHUNKSIZE = 16 * 1024;
[INFO] [stdout]     |                 ^^^^^^^^^ help: convert the identifier to snake case: `chunksize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.33s
[INFO] running `Command { std: "docker" "inspect" "290760bd7f123132921b16665bdcfe0f8ac90462ab3d397129cae4255f518c9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "290760bd7f123132921b16665bdcfe0f8ac90462ab3d397129cae4255f518c9a", kill_on_drop: false }`
[INFO] [stdout] 290760bd7f123132921b16665bdcfe0f8ac90462ab3d397129cae4255f518c9a