[INFO] fetching crate datagen_gnss 0.1.8...
[INFO] checking datagen_gnss-0.1.8 against 1.55.0 for beta-1.56-3
[INFO] extracting crate datagen_gnss 0.1.8 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate datagen_gnss 0.1.8 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate datagen_gnss 0.1.8
[INFO] finished tweaking crates.io crate datagen_gnss 0.1.8
[INFO] tweaked toml for crates.io crate datagen_gnss 0.1.8 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate crates.io crate datagen_gnss 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded seek_bufread v1.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa9c665015c778b00db24098d23429a301ba960dddaa5399d4dfa13413fe7abe
[INFO] running `Command { std: "docker" "start" "-a" "fa9c665015c778b00db24098d23429a301ba960dddaa5399d4dfa13413fe7abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa9c665015c778b00db24098d23429a301ba960dddaa5399d4dfa13413fe7abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9c665015c778b00db24098d23429a301ba960dddaa5399d4dfa13413fe7abe", kill_on_drop: false }`
[INFO] [stdout] fa9c665015c778b00db24098d23429a301ba960dddaa5399d4dfa13413fe7abe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9fb9fe34dee7af0dab38b74fd54dcbc97233adc5a9d88a4817ba25ed49657fe
[INFO] running `Command { std: "docker" "start" "-a" "f9fb9fe34dee7af0dab38b74fd54dcbc97233adc5a9d88a4817ba25ed49657fe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking seek_bufread v1.2.2
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking datagen_gnss v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/async_stream.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 208 |     let mut cursor = Cursor::new(Vec::new());
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> tests/async_stream.rs:234:5
[INFO] [stdout]     |
[INFO] [stdout] 234 | /     stream_to_writer(
[INFO] [stdout] 235 | |         &mut writer, 
[INFO] [stdout] 236 | |         &mut rx, 
[INFO] [stdout] 237 | |         dataset.len() as u32 ,
[INFO] [stdout] 238 | |         &end_flag, &true).await;
[INFO] [stdout]     | |________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.26s
[INFO] running `Command { std: "docker" "inspect" "f9fb9fe34dee7af0dab38b74fd54dcbc97233adc5a9d88a4817ba25ed49657fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9fb9fe34dee7af0dab38b74fd54dcbc97233adc5a9d88a4817ba25ed49657fe", kill_on_drop: false }`
[INFO] [stdout] f9fb9fe34dee7af0dab38b74fd54dcbc97233adc5a9d88a4817ba25ed49657fe
