[INFO] fetching crate futures-mockstream 0.1.2...
[INFO] checking futures-mockstream-0.1.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate futures-mockstream 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate futures-mockstream 0.1.2
[INFO] finished tweaking crates.io crate futures-mockstream 0.1.2
[INFO] tweaked toml for crates.io crate futures-mockstream 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate futures-mockstream 0.1.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 42 packages to latest compatible versions
[INFO] [stderr]       Adding smol v0.1.18 (available: v2.0.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e457777bd6b7b854a2f93f9659ea6ed62ad893111c37fa301b13d740ffd2f93
[INFO] running `Command { std: "docker" "start" "-a" "0e457777bd6b7b854a2f93f9659ea6ed62ad893111c37fa301b13d740ffd2f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e457777bd6b7b854a2f93f9659ea6ed62ad893111c37fa301b13d740ffd2f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e457777bd6b7b854a2f93f9659ea6ed62ad893111c37fa301b13d740ffd2f93", kill_on_drop: false }`
[INFO] [stdout] 0e457777bd6b7b854a2f93f9659ea6ed62ad893111c37fa301b13d740ffd2f93
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5206e266dc9f6fb22ee908291cc36b1532292ef6d4b7b1e6d2ffcce6bbefd2f
[INFO] running `Command { std: "docker" "start" "-a" "d5206e266dc9f6fb22ee908291cc36b1532292ef6d4b7b1e6d2ffcce6bbefd2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking cache-padded v1.3.0
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking futures-mockstream v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stdout] warning: field `from_index` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MockStream {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 29 |     buf: Cursor<Vec<u8>>,
[INFO] [stdout] 30 |     from_index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MockStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stdout] warning: field `from_index` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MockStream {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 29 |     buf: Cursor<Vec<u8>>,
[INFO] [stdout] 30 |     from_index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MockStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "d5206e266dc9f6fb22ee908291cc36b1532292ef6d4b7b1e6d2ffcce6bbefd2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5206e266dc9f6fb22ee908291cc36b1532292ef6d4b7b1e6d2ffcce6bbefd2f", kill_on_drop: false }`
[INFO] [stdout] d5206e266dc9f6fb22ee908291cc36b1532292ef6d4b7b1e6d2ffcce6bbefd2f