[INFO] fetching crate libtelnet-rs 2.0.0...
[INFO] checking libtelnet-rs-2.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate libtelnet-rs 2.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate libtelnet-rs 2.0.0 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 libtelnet-rs 2.0.0
[INFO] finished tweaking crates.io crate libtelnet-rs 2.0.0
[INFO] tweaked toml for crates.io crate libtelnet-rs 2.0.0 written to /workspace/builds/worker-5-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 2 packages
[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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 597a18808f2a1d6470ee6c3fab80c959d08e5ec2c1d74e0dfc712b07eda60b41
[INFO] running `Command { std: "docker" "start" "-a" "597a18808f2a1d6470ee6c3fab80c959d08e5ec2c1d74e0dfc712b07eda60b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "597a18808f2a1d6470ee6c3fab80c959d08e5ec2c1d74e0dfc712b07eda60b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597a18808f2a1d6470ee6c3fab80c959d08e5ec2c1d74e0dfc712b07eda60b41", kill_on_drop: false }`
[INFO] [stdout] 597a18808f2a1d6470ee6c3fab80c959d08e5ec2c1d74e0dfc712b07eda60b41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2de57dc213582c695ed4b93ad52382aaadede49d2eccfcf9474ed021c529fcca
[INFO] running `Command { std: "docker" "start" "-a" "2de57dc213582c695ed4b93ad52382aaadede49d2eccfcf9474ed021c529fcca", kill_on_drop: false }`
[INFO] [stderr]     Checking libtelnet-rs v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Bytes` is imported redundantly
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bytes::Bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 4 |
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `Bytes` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.36s
[INFO] running `Command { std: "docker" "inspect" "2de57dc213582c695ed4b93ad52382aaadede49d2eccfcf9474ed021c529fcca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de57dc213582c695ed4b93ad52382aaadede49d2eccfcf9474ed021c529fcca", kill_on_drop: false }`
[INFO] [stdout] 2de57dc213582c695ed4b93ad52382aaadede49d2eccfcf9474ed021c529fcca
[INFO] checking libtelnet-rs-2.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate libtelnet-rs 2.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate libtelnet-rs 2.0.0 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 libtelnet-rs 2.0.0
[INFO] finished tweaking crates.io crate libtelnet-rs 2.0.0
[INFO] tweaked toml for crates.io crate libtelnet-rs 2.0.0 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] eff4e6bd24ddfe538469cabfc67171134a5d61814ecc66f629f363c0848e05fa
[INFO] running `Command { std: "docker" "start" "-a" "eff4e6bd24ddfe538469cabfc67171134a5d61814ecc66f629f363c0848e05fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eff4e6bd24ddfe538469cabfc67171134a5d61814ecc66f629f363c0848e05fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eff4e6bd24ddfe538469cabfc67171134a5d61814ecc66f629f363c0848e05fa", kill_on_drop: false }`
[INFO] [stdout] eff4e6bd24ddfe538469cabfc67171134a5d61814ecc66f629f363c0848e05fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e35b7ba55ce83a722fe5559c48557f5fa6e41d2f2880493b03271f381b5fdbfb
[INFO] running `Command { std: "docker" "start" "-a" "e35b7ba55ce83a722fe5559c48557f5fa6e41d2f2880493b03271f381b5fdbfb", kill_on_drop: false }`
[INFO] [stderr]     Checking libtelnet-rs v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Bytes` is imported redundantly
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bytes::Bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 4 |
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `Bytes` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.18s
[INFO] running `Command { std: "docker" "inspect" "e35b7ba55ce83a722fe5559c48557f5fa6e41d2f2880493b03271f381b5fdbfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35b7ba55ce83a722fe5559c48557f5fa6e41d2f2880493b03271f381b5fdbfb", kill_on_drop: false }`
[INFO] [stdout] e35b7ba55ce83a722fe5559c48557f5fa6e41d2f2880493b03271f381b5fdbfb