[INFO] fetching crate telnet-codec 0.1.0...
[INFO] building telnet-codec-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate telnet-codec 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate telnet-codec 0.1.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding tokio-util v0.6.10 (available: v0.7.13)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c78b96e1f7f6a720f6de3d9208552e7ce98158fbed602fa21d8cb9f8a97652f3
[INFO] running `Command { std: "docker" "start" "-a" "c78b96e1f7f6a720f6de3d9208552e7ce98158fbed602fa21d8cb9f8a97652f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c78b96e1f7f6a720f6de3d9208552e7ce98158fbed602fa21d8cb9f8a97652f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c78b96e1f7f6a720f6de3d9208552e7ce98158fbed602fa21d8cb9f8a97652f3", kill_on_drop: false }`
[INFO] [stdout] c78b96e1f7f6a720f6de3d9208552e7ce98158fbed602fa21d8cb9f8a97652f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705ed6dcc6164e1b812999b6bb732a4f5878354b15f7c16c10bb7f03a79c7280
[INFO] running `Command { std: "docker" "start" "-a" "705ed6dcc6164e1b812999b6bb732a4f5878354b15f7c16c10bb7f03a79c7280", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling tokio v1.42.0
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "705ed6dcc6164e1b812999b6bb732a4f5878354b15f7c16c10bb7f03a79c7280", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705ed6dcc6164e1b812999b6bb732a4f5878354b15f7c16c10bb7f03a79c7280", kill_on_drop: false }`
[INFO] [stdout] 705ed6dcc6164e1b812999b6bb732a4f5878354b15f7c16c10bb7f03a79c7280
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6264a107d090ba2004c29005ff1ec435dde7971a1d8b311fc76eac56b3da326a
[INFO] running `Command { std: "docker" "start" "-a" "6264a107d090ba2004c29005ff1ec435dde7971a1d8b311fc76eac56b3da326a", kill_on_drop: false }`
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "6264a107d090ba2004c29005ff1ec435dde7971a1d8b311fc76eac56b3da326a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6264a107d090ba2004c29005ff1ec435dde7971a1d8b311fc76eac56b3da326a", kill_on_drop: false }`
[INFO] [stdout] 6264a107d090ba2004c29005ff1ec435dde7971a1d8b311fc76eac56b3da326a