[INFO] fetching crate mini-lsm 0.1.0...
[INFO] checking mini-lsm-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mini-lsm 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mini-lsm 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 mini-lsm 0.1.0
[INFO] finished tweaking crates.io crate mini-lsm 0.1.0
[INFO] tweaked toml for crates.io crate mini-lsm 0.1.0 written to /workspace/builds/worker-2-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]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[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] d119e0f8b6603db25b55af6ca02c9624f432e340a1b3c533a2a9d258da9ef1b1
[INFO] running `Command { std: "docker" "start" "-a" "d119e0f8b6603db25b55af6ca02c9624f432e340a1b3c533a2a9d258da9ef1b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d119e0f8b6603db25b55af6ca02c9624f432e340a1b3c533a2a9d258da9ef1b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d119e0f8b6603db25b55af6ca02c9624f432e340a1b3c533a2a9d258da9ef1b1", kill_on_drop: false }`
[INFO] [stdout] d119e0f8b6603db25b55af6ca02c9624f432e340a1b3c533a2a9d258da9ef1b1
[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] 38d9384fe1879a72feeb0df51e2cc4dd142d4942a0ea974d6ee9d50963f14eb2
[INFO] running `Command { std: "docker" "start" "-a" "38d9384fe1879a72feeb0df51e2cc4dd142d4942a0ea974d6ee9d50963f14eb2", kill_on_drop: false }`
[INFO] [stderr]     Checking mini-lsm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BlockBuilder` is imported redundantly
[INFO] [stdout]   --> src/block.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use super::{builder::BlockBuilder, iterator::BlockIterator, *};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^                           - the item `BlockBuilder` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BlockIterator` is imported redundantly
[INFO] [stdout]   --> src/block.rs:45:40
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use super::{builder::BlockBuilder, iterator::BlockIterator, *};
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^  - the item `BlockIterator` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "38d9384fe1879a72feeb0df51e2cc4dd142d4942a0ea974d6ee9d50963f14eb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38d9384fe1879a72feeb0df51e2cc4dd142d4942a0ea974d6ee9d50963f14eb2", kill_on_drop: false }`
[INFO] [stdout] 38d9384fe1879a72feeb0df51e2cc4dd142d4942a0ea974d6ee9d50963f14eb2
[INFO] checking mini-lsm-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate mini-lsm 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate mini-lsm 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 mini-lsm 0.1.0
[INFO] finished tweaking crates.io crate mini-lsm 0.1.0
[INFO] tweaked toml for crates.io crate mini-lsm 0.1.0 written to /workspace/builds/worker-2-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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 01a59110026e003ca0afb586ac2d259cddf0aad39995b5d722ab6ab4fec2d46d
[INFO] running `Command { std: "docker" "start" "-a" "01a59110026e003ca0afb586ac2d259cddf0aad39995b5d722ab6ab4fec2d46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01a59110026e003ca0afb586ac2d259cddf0aad39995b5d722ab6ab4fec2d46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01a59110026e003ca0afb586ac2d259cddf0aad39995b5d722ab6ab4fec2d46d", kill_on_drop: false }`
[INFO] [stdout] 01a59110026e003ca0afb586ac2d259cddf0aad39995b5d722ab6ab4fec2d46d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1076065edaa977260330c49622507f0131cbe7f038c34d983840b7c97a92903c
[INFO] running `Command { std: "docker" "start" "-a" "1076065edaa977260330c49622507f0131cbe7f038c34d983840b7c97a92903c", kill_on_drop: false }`
[INFO] [stderr]     Checking mini-lsm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BlockBuilder` is imported redundantly
[INFO] [stdout]   --> src/block.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use super::{builder::BlockBuilder, iterator::BlockIterator, *};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^                           - the item `BlockBuilder` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BlockIterator` is imported redundantly
[INFO] [stdout]   --> src/block.rs:45:40
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use super::{builder::BlockBuilder, iterator::BlockIterator, *};
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^  - the item `BlockIterator` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "1076065edaa977260330c49622507f0131cbe7f038c34d983840b7c97a92903c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1076065edaa977260330c49622507f0131cbe7f038c34d983840b7c97a92903c", kill_on_drop: false }`
[INFO] [stdout] 1076065edaa977260330c49622507f0131cbe7f038c34d983840b7c97a92903c