[INFO] fetching crate rseip-core 0.1.3...
[INFO] checking rseip-core-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rseip-core 0.1.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rseip-core 0.1.3 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 rseip-core 0.1.3
[INFO] finished tweaking crates.io crate rseip-core 0.1.3
[INFO] tweaked toml for crates.io crate rseip-core 0.1.3 written to /workspace/builds/worker-0-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 5 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 35882cc4b3155fa0a47288eb4dc3c2c68032f704bd4de26ae961f4cd65fb3b9f
[INFO] running `Command { std: "docker" "start" "-a" "35882cc4b3155fa0a47288eb4dc3c2c68032f704bd4de26ae961f4cd65fb3b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35882cc4b3155fa0a47288eb4dc3c2c68032f704bd4de26ae961f4cd65fb3b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35882cc4b3155fa0a47288eb4dc3c2c68032f704bd4de26ae961f4cd65fb3b9f", kill_on_drop: false }`
[INFO] [stdout] 35882cc4b3155fa0a47288eb4dc3c2c68032f704bd4de26ae961f4cd65fb3b9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 887d6f641cb31ef584b2583e36dc538faa5ed710d4d40513393382cd7cfa3ca0
[INFO] running `Command { std: "docker" "start" "-a" "887d6f641cb31ef584b2583e36dc538faa5ed710d4d40513393382cd7cfa3ca0", kill_on_drop: false }`
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking rseip-core v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BytesMut` is imported redundantly
[INFO] [stdout]   --> src/codec/encode/impls.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 9  | use super::*;
[INFO] [stdout]    |     -------- the item `BytesMut` is already imported here
[INFO] [stdout] 10 | use alloc::{rc::Rc, sync::Arc};
[INFO] [stdout] 11 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BytesMut` is imported redundantly
[INFO] [stdout]   --> src/codec/encode/impls.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 9  | use super::*;
[INFO] [stdout]    |     -------- the item `BytesMut` is already imported here
[INFO] [stdout] 10 | use alloc::{rc::Rc, sync::Arc};
[INFO] [stdout] 11 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]    |                            ^^^^^^^^
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "887d6f641cb31ef584b2583e36dc538faa5ed710d4d40513393382cd7cfa3ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887d6f641cb31ef584b2583e36dc538faa5ed710d4d40513393382cd7cfa3ca0", kill_on_drop: false }`
[INFO] [stdout] 887d6f641cb31ef584b2583e36dc538faa5ed710d4d40513393382cd7cfa3ca0