[INFO] fetching crate bare_cnr 0.1.0-alpha.1...
[INFO] checking bare_cnr-0.1.0-alpha.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate bare_cnr 0.1.0-alpha.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bare_cnr 0.1.0-alpha.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bare_cnr 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate bare_cnr 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate bare_cnr 0.1.0-alpha.1 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 66 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding dashmap v5.5.3 (latest: v6.0.1)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_bare v0.5.0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e4767af1b327517ee8d5a32ecadf1e5414fb2f4fe9445ed433382f8878dc94e
[INFO] running `Command { std: "docker" "start" "-a" "0e4767af1b327517ee8d5a32ecadf1e5414fb2f4fe9445ed433382f8878dc94e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e4767af1b327517ee8d5a32ecadf1e5414fb2f4fe9445ed433382f8878dc94e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e4767af1b327517ee8d5a32ecadf1e5414fb2f4fe9445ed433382f8878dc94e", kill_on_drop: false }`
[INFO] [stdout] 0e4767af1b327517ee8d5a32ecadf1e5414fb2f4fe9445ed433382f8878dc94e
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5ac95051877cbaa4d92c40cfb60d7e00321f52b6fc93bd409e68b71fd47df87
[INFO] running `Command { std: "docker" "start" "-a" "e5ac95051877cbaa4d92c40cfb60d7e00321f52b6fc93bd409e68b71fd47df87", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking serde_bare v0.5.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking tokio v1.39.3
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking bare_cnr v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/multiplexer.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |                     if let Err(err) = oe.get().send(buf).await {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `task_tx` and `task_rx` are never read
[INFO] [stdout]   --> src/multiplexer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct TransportMultiplexer {
[INFO] [stdout]    |            -------------------- fields in this struct
[INFO] [stdout] 16 |     task_tx: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     task_rx: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-test v0.4.4
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/multiplexer.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |                     if let Err(err) = oe.get().send(buf).await {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `task_tx` and `task_rx` are never read
[INFO] [stdout]   --> src/multiplexer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct TransportMultiplexer {
[INFO] [stdout]    |            -------------------- fields in this struct
[INFO] [stdout] 16 |     task_tx: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     task_rx: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "e5ac95051877cbaa4d92c40cfb60d7e00321f52b6fc93bd409e68b71fd47df87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ac95051877cbaa4d92c40cfb60d7e00321f52b6fc93bd409e68b71fd47df87", kill_on_drop: false }`
[INFO] [stdout] e5ac95051877cbaa4d92c40cfb60d7e00321f52b6fc93bd409e68b71fd47df87