[INFO] fetching crate adlib 0.1.1...
[INFO] checking adlib-0.1.1 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate adlib 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate adlib 0.1.1 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate adlib 0.1.1
[INFO] finished tweaking crates.io crate adlib 0.1.1
[INFO] tweaked toml for crates.io crate adlib 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dd88c328952a9f19760ac67785d7e5de074856fa53c64a778b3f42105f58afc
[INFO] running `Command { std: "docker" "start" "-a" "4dd88c328952a9f19760ac67785d7e5de074856fa53c64a778b3f42105f58afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dd88c328952a9f19760ac67785d7e5de074856fa53c64a778b3f42105f58afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd88c328952a9f19760ac67785d7e5de074856fa53c64a778b3f42105f58afc", kill_on_drop: false }`
[INFO] [stdout] 4dd88c328952a9f19760ac67785d7e5de074856fa53c64a778b3f42105f58afc
[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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cab9e115b5cd4682757307a3f45918ee241e5b4a889468646ae1cbbd3c2cd2d
[INFO] running `Command { std: "docker" "start" "-a" "8cab9e115b5cd4682757307a3f45918ee241e5b4a889468646ae1cbbd3c2cd2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking adlib v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pipe.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn plug<'a>(&'a mut self, mut plug: P) -> &'a mut Self {
[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: fields `source` and `sink` are never read
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Pipe<P, IN, OUT> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 4 |     plugs: Vec<P>,
[INFO] [stdout] 5 |     source: IN,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     sink: OUT,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `prev` is never read
[INFO] [stdout]   --> src/plug.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Blank<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 10 |     pub(crate) prev: &'a dyn Stream<Item = PipeMessage>,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pipe.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn plug<'a>(&'a mut self, mut plug: P) -> &'a mut Self {
[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: fields `source` and `sink` are never read
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Pipe<P, IN, OUT> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 4 |     plugs: Vec<P>,
[INFO] [stdout] 5 |     source: IN,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     sink: OUT,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `prev` is never read
[INFO] [stdout]   --> src/plug.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Blank<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 10 |     pub(crate) prev: &'a dyn Stream<Item = PipeMessage>,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `Command { std: "docker" "inspect" "8cab9e115b5cd4682757307a3f45918ee241e5b4a889468646ae1cbbd3c2cd2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cab9e115b5cd4682757307a3f45918ee241e5b4a889468646ae1cbbd3c2cd2d", kill_on_drop: false }`
[INFO] [stdout] 8cab9e115b5cd4682757307a3f45918ee241e5b4a889468646ae1cbbd3c2cd2d
