[INFO] fetching crate bos 0.3.1...
[INFO] checking bos-0.3.1 against try#804fff1ae95da9d03bd44eee27f258020a575dab for pr-146013
[INFO] extracting crate bos 0.3.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate bos 0.3.1
[INFO] finished tweaking crates.io crate bos 0.3.1
[INFO] tweaked toml for crates.io crate bos 0.3.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bos 0.3.1 on toolchain 804fff1ae95da9d03bd44eee27f258020a575dab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "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" "+804fff1ae95da9d03bd44eee27f258020a575dab" "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 16 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae361be425d616bccb39afe2001854657a19bdef686b3f0bc4eb05d895ba8ae6
[INFO] running `Command { std: "docker" "start" "-a" "ae361be425d616bccb39afe2001854657a19bdef686b3f0bc4eb05d895ba8ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae361be425d616bccb39afe2001854657a19bdef686b3f0bc4eb05d895ba8ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae361be425d616bccb39afe2001854657a19bdef686b3f0bc4eb05d895ba8ae6", kill_on_drop: false }`
[INFO] [stdout] ae361be425d616bccb39afe2001854657a19bdef686b3f0bc4eb05d895ba8ae6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+804fff1ae95da9d03bd44eee27f258020a575dab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 531a28d98d29f7783da95e32d371f0bba463aebd41580a3bf89b96b7cdf73bc8
[INFO] running `Command { std: "docker" "start" "-a" "531a28d98d29f7783da95e32d371f0bba463aebd41580a3bf89b96b7cdf73bc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking bos v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Arc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/abos.rs:351:38
[INFO] [stdout]     |
[INFO] [stdout] 351 |             Self::BorrowedArc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Arc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/bos.rs:356:38
[INFO] [stdout]     |
[INFO] [stdout] 356 |             Self::BorrowedArc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Rc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/bos.rs:358:37
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Self::BorrowedRc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling lifetime_proc_macros_impl v0.1.0
[INFO] [stderr]    Compiling lifetime_proc_macros v0.1.0
[INFO] [stderr]     Checking lifetime v0.1.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Arc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/abos.rs:351:38
[INFO] [stdout]     |
[INFO] [stdout] 351 |             Self::BorrowedArc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Arc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/bos.rs:356:38
[INFO] [stdout]     |
[INFO] [stdout] 356 |             Self::BorrowedArc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Rc<S>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/bos.rs:358:37
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Self::BorrowedRc(x) => x.deref().deref().borrow(),
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.01s
[INFO] running `Command { std: "docker" "inspect" "531a28d98d29f7783da95e32d371f0bba463aebd41580a3bf89b96b7cdf73bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "531a28d98d29f7783da95e32d371f0bba463aebd41580a3bf89b96b7cdf73bc8", kill_on_drop: false }`
[INFO] [stdout] 531a28d98d29f7783da95e32d371f0bba463aebd41580a3bf89b96b7cdf73bc8