[INFO] fetching crate telnet-codec 0.1.0...
[INFO] testing telnet-codec-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate telnet-codec 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate telnet-codec 0.1.0
[INFO] finished tweaking crates.io crate telnet-codec 0.1.0
[INFO] tweaked toml for crates.io crate telnet-codec 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate telnet-codec 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding tokio-util v0.6.10 (available: v0.7.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1971b0cce0a8a203dc6a8171a40275138964f2f2a3c3a40733a7243d2a502e9
[INFO] running `Command { std: "docker" "start" "-a" "d1971b0cce0a8a203dc6a8171a40275138964f2f2a3c3a40733a7243d2a502e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1971b0cce0a8a203dc6a8171a40275138964f2f2a3c3a40733a7243d2a502e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1971b0cce0a8a203dc6a8171a40275138964f2f2a3c3a40733a7243d2a502e9", kill_on_drop: false }`
[INFO] [stdout] d1971b0cce0a8a203dc6a8171a40275138964f2f2a3c3a40733a7243d2a502e9
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a1bc0070037eee8ce772aeac6bd5c0d7077ef78fa1d2ec35a8b4cb421c78b5f
[INFO] running `Command { std: "docker" "start" "-a" "2a1bc0070037eee8ce772aeac6bd5c0d7077ef78fa1d2ec35a8b4cb421c78b5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling tokio-util v0.6.10
[INFO] [stderr]    Compiling telnet-codec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `max_buffer` is never read
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct TelnetCodec {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 61 |     max_buffer: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TelnetCodec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "2a1bc0070037eee8ce772aeac6bd5c0d7077ef78fa1d2ec35a8b4cb421c78b5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a1bc0070037eee8ce772aeac6bd5c0d7077ef78fa1d2ec35a8b4cb421c78b5f", kill_on_drop: false }`
[INFO] [stdout] 2a1bc0070037eee8ce772aeac6bd5c0d7077ef78fa1d2ec35a8b4cb421c78b5f
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d49216a1b52c0141dfa4301519dc1c798f4956d2e430d2aa84807d1c146cd684
[INFO] running `Command { std: "docker" "start" "-a" "d49216a1b52c0141dfa4301519dc1c798f4956d2e430d2aa84807d1c146cd684", kill_on_drop: false }`
[INFO] [stdout] warning: field `max_buffer` is never read
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct TelnetCodec {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 61 |     max_buffer: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TelnetCodec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling telnet-codec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `max_buffer` is never read
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct TelnetCodec {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 61 |     max_buffer: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TelnetCodec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "d49216a1b52c0141dfa4301519dc1c798f4956d2e430d2aa84807d1c146cd684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d49216a1b52c0141dfa4301519dc1c798f4956d2e430d2aa84807d1c146cd684", kill_on_drop: false }`
[INFO] [stdout] d49216a1b52c0141dfa4301519dc1c798f4956d2e430d2aa84807d1c146cd684
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d0703467c903bb4d4c56ea7e34ec0d2d86b6b92d6be834d388a78feb0f51d1f
[INFO] running `Command { std: "docker" "start" "-a" "4d0703467c903bb4d4c56ea7e34ec0d2d86b6b92d6be834d388a78feb0f51d1f", kill_on_drop: false }`
[INFO] [stderr] warning: field `max_buffer` is never read
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:61:5
[INFO] [stdout] running 1 test
[INFO] [stderr]    |
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr] 60 | pub struct TelnetCodec {
[INFO] [stdout] 
[INFO] [stderr]    |            ----------- field in this struct
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 61 |     max_buffer: usize,
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TelnetCodec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `telnet-codec` (lib) generated 1 warning
[INFO] [stderr] warning: `telnet-codec` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/telnet_codec-0d85c1a061ea14ca)
[INFO] [stderr]    Doc-tests telnet_codec
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d0703467c903bb4d4c56ea7e34ec0d2d86b6b92d6be834d388a78feb0f51d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0703467c903bb4d4c56ea7e34ec0d2d86b6b92d6be834d388a78feb0f51d1f", kill_on_drop: false }`
[INFO] [stdout] 4d0703467c903bb4d4c56ea7e34ec0d2d86b6b92d6be834d388a78feb0f51d1f