[INFO] cloning repository https://github.com/grandzero/codecrafters-bittorrent-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grandzero/codecrafters-bittorrent-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandzero%2Fcodecrafters-bittorrent-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandzero%2Fcodecrafters-bittorrent-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 149d5f71ee6f5ca16d8b0ea0ad2e407d2a43731d
[INFO] checking grandzero/codecrafters-bittorrent-client against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandzero%2Fcodecrafters-bittorrent-client" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grandzero/codecrafters-bittorrent-client 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/grandzero/codecrafters-bittorrent-client
[INFO] finished tweaking git repo https://github.com/grandzero/codecrafters-bittorrent-client
[INFO] tweaked toml for git repo https://github.com/grandzero/codecrafters-bittorrent-client written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/grandzero/codecrafters-bittorrent-client 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_bencode v0.2.4
[INFO] [stderr]   Downloaded bendy v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4151b15195769ad1ab8d2c679b5ea7095c503e4510887830841ec5ee7da33423
[INFO] running `Command { std: "docker" "start" "-a" "4151b15195769ad1ab8d2c679b5ea7095c503e4510887830841ec5ee7da33423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4151b15195769ad1ab8d2c679b5ea7095c503e4510887830841ec5ee7da33423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4151b15195769ad1ab8d2c679b5ea7095c503e4510887830841ec5ee7da33423", kill_on_drop: false }`
[INFO] [stdout] 4151b15195769ad1ab8d2c679b5ea7095c503e4510887830841ec5ee7da33423
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4e9b209e71693000ef6717af4c017292f13e66d4a881846a887ea4c6129f0812
[INFO] running `Command { std: "docker" "start" "-a" "4e9b209e71693000ef6717af4c017292f13e66d4a881846a887ea4c6129f0812", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling backtrace v0.3.68
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking aho-corasick v1.0.4
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]     Checking clap_builder v4.3.22
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking tempfile v3.7.1
[INFO] [stderr]     Checking urlencoding v2.1.3
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking regex-automata v0.3.6
[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]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]     Checking regex v1.9.3
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking openssl v0.10.56
[INFO] [stderr]     Checking bendy v0.3.3
[INFO] [stderr]     Checking tokio v1.32.0
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[INFO] [stderr]     Checking tokio-util v0.7.8
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[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking bittorrent-starter-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/tcphandshake.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/tracker.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/tcphandshake.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/tracker.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `created_by` is never read
[INFO] [stdout]   --> src/custom_bencode_decode.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct MetaInfo {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub created_by: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MetaInfo` 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: field `0` is never read
[INFO] [stdout]   --> src/tcphandshake.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |     TcpStreamError(std::io::Error),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     TcpStreamError(()),
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `created_by` is never read
[INFO] [stdout]   --> src/custom_bencode_decode.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct MetaInfo {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub created_by: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MetaInfo` 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: field `0` is never read
[INFO] [stdout]   --> src/tcphandshake.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |     TcpStreamError(std::io::Error),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     TcpStreamError(()),
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.99s
[INFO] running `Command { std: "docker" "inspect" "4e9b209e71693000ef6717af4c017292f13e66d4a881846a887ea4c6129f0812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9b209e71693000ef6717af4c017292f13e66d4a881846a887ea4c6129f0812", kill_on_drop: false }`
[INFO] [stdout] 4e9b209e71693000ef6717af4c017292f13e66d4a881846a887ea4c6129f0812