[INFO] fetching crate rust-reduce 0.1.0...
[INFO] checking rust-reduce-0.1.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate rust-reduce 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rust-reduce 0.1.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-reduce 0.1.0
[INFO] finished tweaking crates.io crate rust-reduce 0.1.0
[INFO] tweaked toml for crates.io crate rust-reduce 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3aad59cc2dfeaa36bec803c1918b435f49f3cb4b983f39feb564c3deb78f2b8c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3aad59cc2dfeaa36bec803c1918b435f49f3cb4b983f39feb564c3deb78f2b8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3aad59cc2dfeaa36bec803c1918b435f49f3cb4b983f39feb564c3deb78f2b8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aad59cc2dfeaa36bec803c1918b435f49f3cb4b983f39feb564c3deb78f2b8c", kill_on_drop: false }`
[INFO] [stdout] 3aad59cc2dfeaa36bec803c1918b435f49f3cb4b983f39feb564c3deb78f2b8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ba8c3e0ae4aedc601a42704845c9dbf14639241c1e7674b5e964be526f7b443
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ba8c3e0ae4aedc601a42704845c9dbf14639241c1e7674b5e964be526f7b443", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking syn-inline-mod v0.2.0
[INFO] [stderr]     Checking rust-reduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:25:43
[INFO] [stdout]    |
[INFO] [stdout] 25 |     constructor: fn(PathBuf, bool) -> Box<OutputType>,
[INFO] [stdout]    |                                           ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     inner: Option<Box<OutputType>>,
[INFO] [stdout]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:49:53
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn new(path: PathBuf, need_backup: bool) -> Box<OutputType> where Self: Sized;
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:59:53
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:94:53
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/output.rs:160:56
[INFO] [stdout]     |
[INFO] [stdout] 160 |                     Box::new(std::io::stdout()) as Box<Write>
[INFO] [stdout]     |                                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:25:43
[INFO] [stdout]    |
[INFO] [stdout] 25 |     constructor: fn(PathBuf, bool) -> Box<OutputType>,
[INFO] [stdout]    |                                           ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     inner: Option<Box<OutputType>>,
[INFO] [stdout]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:49:53
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn new(path: PathBuf, need_backup: bool) -> Box<OutputType> where Self: Sized;
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:59:53
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/output.rs:94:53
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/output.rs:160:56
[INFO] [stdout]     |
[INFO] [stdout] 160 |                     Box::new(std::io::stdout()) as Box<Write>
[INFO] [stdout]     |                                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/transforms/clear_blocks.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 mem::replace(i, backup);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/transforms/clear_blocks.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 mem::replace(i, backup);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.66s
[INFO] running `Command { std: "docker" "inspect" "0ba8c3e0ae4aedc601a42704845c9dbf14639241c1e7674b5e964be526f7b443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ba8c3e0ae4aedc601a42704845c9dbf14639241c1e7674b5e964be526f7b443", kill_on_drop: false }`
[INFO] [stdout] 0ba8c3e0ae4aedc601a42704845c9dbf14639241c1e7674b5e964be526f7b443