[INFO] fetching crate telnet-codec 0.1.0...
[INFO] checking telnet-codec-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate telnet-codec 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate telnet-codec 0.1.0 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 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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding tokio-util v0.6.10 (latest: v0.7.10)
[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] 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c5110023b77d0b7feeea1089a5b65069dc7cb61051517b64cbc1a0adbec0dd2
[INFO] running `Command { std: "docker" "start" "-a" "0c5110023b77d0b7feeea1089a5b65069dc7cb61051517b64cbc1a0adbec0dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c5110023b77d0b7feeea1089a5b65069dc7cb61051517b64cbc1a0adbec0dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c5110023b77d0b7feeea1089a5b65069dc7cb61051517b64cbc1a0adbec0dd2", kill_on_drop: false }`
[INFO] [stdout] 0c5110023b77d0b7feeea1089a5b65069dc7cb61051517b64cbc1a0adbec0dd2
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bc571ed8a4a6e866a387e81e8385bc3b53edf5e7f5df143466312f19efdfdfe
[INFO] running `Command { std: "docker" "start" "-a" "0bc571ed8a4a6e866a387e81e8385bc3b53edf5e7f5df143466312f19efdfdfe", kill_on_drop: false }`
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking 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: 1 warning emitted
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "0bc571ed8a4a6e866a387e81e8385bc3b53edf5e7f5df143466312f19efdfdfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bc571ed8a4a6e866a387e81e8385bc3b53edf5e7f5df143466312f19efdfdfe", kill_on_drop: false }`
[INFO] [stdout] 0bc571ed8a4a6e866a387e81e8385bc3b53edf5e7f5df143466312f19efdfdfe
[INFO] checking telnet-codec-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate telnet-codec 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate telnet-codec 0.1.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d94aef79467e33ea1c62d7e385f04cd578a6943f418ef39da15a299fdadd8366
[INFO] running `Command { std: "docker" "start" "-a" "d94aef79467e33ea1c62d7e385f04cd578a6943f418ef39da15a299fdadd8366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d94aef79467e33ea1c62d7e385f04cd578a6943f418ef39da15a299fdadd8366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d94aef79467e33ea1c62d7e385f04cd578a6943f418ef39da15a299fdadd8366", kill_on_drop: false }`
[INFO] [stdout] d94aef79467e33ea1c62d7e385f04cd578a6943f418ef39da15a299fdadd8366
[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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a8877393a2d304fd291bbd7f4540e837a1db92f4498780772428dc980a750c9
[INFO] running `Command { std: "docker" "start" "-a" "6a8877393a2d304fd291bbd7f4540e837a1db92f4498780772428dc980a750c9", kill_on_drop: false }`
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "6a8877393a2d304fd291bbd7f4540e837a1db92f4498780772428dc980a750c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a8877393a2d304fd291bbd7f4540e837a1db92f4498780772428dc980a750c9", kill_on_drop: false }`
[INFO] [stdout] 6a8877393a2d304fd291bbd7f4540e837a1db92f4498780772428dc980a750c9