[INFO] fetching crate refbox 0.3.0...
[INFO] checking refbox-0.3.0 against try#9d63f825c0d409b0e1743a2c84b33f86965e5929 for pr-136968
[INFO] extracting crate refbox 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate refbox 0.3.0 on toolchain 9d63f825c0d409b0e1743a2c84b33f86965e5929
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d63f825c0d409b0e1743a2c84b33f86965e5929" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate refbox 0.3.0
[INFO] finished tweaking crates.io crate refbox 0.3.0
[INFO] tweaked toml for crates.io crate refbox 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d63f825c0d409b0e1743a2c84b33f86965e5929" "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 71 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d63f825c0d409b0e1743a2c84b33f86965e5929" "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-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9d63f825c0d409b0e1743a2c84b33f86965e5929" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b027c73c262e41ca59d249e5a12bdcb16e06aaf5b7ce91890c0f22739b34cc4e
[INFO] running `Command { std: "docker" "start" "-a" "b027c73c262e41ca59d249e5a12bdcb16e06aaf5b7ce91890c0f22739b34cc4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b027c73c262e41ca59d249e5a12bdcb16e06aaf5b7ce91890c0f22739b34cc4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b027c73c262e41ca59d249e5a12bdcb16e06aaf5b7ce91890c0f22739b34cc4e", kill_on_drop: false }`
[INFO] [stdout] b027c73c262e41ca59d249e5a12bdcb16e06aaf5b7ce91890c0f22739b34cc4e
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9d63f825c0d409b0e1743a2c84b33f86965e5929" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 526a33f807b68044a1bcaa4888afde8ec9bf939fea7ae58acea4a684ed9c0fd2
[INFO] running `Command { std: "docker" "start" "-a" "526a33f807b68044a1bcaa4888afde8ec9bf939fea7ae58acea4a684ed9c0fd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking ryu v1.0.19
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking refbox v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]    --> src/lib.rs:401:9
[INFO] [stdout]     |
[INFO] [stdout] 401 |         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]     |
[INFO] [stdout] 401 -         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout] 401 +         std::ptr::addr_eq(self.ptr.as_ptr(), other.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]     |
[INFO] [stdout] 401 -         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout] 401 +         std::ptr::eq(self.ptr.as_ptr(), other.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]    --> src/lib.rs:501:9
[INFO] [stdout]     |
[INFO] [stdout] 501 |         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]     |
[INFO] [stdout] 501 -         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout] 501 +         std::ptr::addr_eq(self.ptr.as_ptr(), owner.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]     |
[INFO] [stdout] 501 -         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout] 501 +         std::ptr::eq(self.ptr.as_ptr(), owner.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]    --> src/lib.rs:401:9
[INFO] [stdout]     |
[INFO] [stdout] 401 |         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]     |
[INFO] [stdout] 401 -         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout] 401 +         std::ptr::addr_eq(self.ptr.as_ptr(), other.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]     |
[INFO] [stdout] 401 -         self.ptr.as_ptr() == other.ptr.as_ptr()
[INFO] [stdout] 401 +         std::ptr::eq(self.ptr.as_ptr(), other.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]    --> src/lib.rs:501:9
[INFO] [stdout]     |
[INFO] [stdout] 501 |         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]     |
[INFO] [stdout] 501 -         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout] 501 +         std::ptr::addr_eq(self.ptr.as_ptr(), owner.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]     |
[INFO] [stdout] 501 -         self.ptr.as_ptr() == owner.ptr.as_ptr()
[INFO] [stdout] 501 +         std::ptr::eq(self.ptr.as_ptr(), owner.ptr.as_ptr())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> src/lib.rs:1024:9
[INFO] [stdout]      |
[INFO] [stdout] 1024 |         drop(mut_ref);
[INFO] [stdout]      |         ^^^^^-------^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mut i32`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1024 -         drop(mut_ref);
[INFO] [stdout] 1024 +         let _ = mut_ref;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.44s
[INFO] running `Command { std: "docker" "inspect" "526a33f807b68044a1bcaa4888afde8ec9bf939fea7ae58acea4a684ed9c0fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "526a33f807b68044a1bcaa4888afde8ec9bf939fea7ae58acea4a684ed9c0fd2", kill_on_drop: false }`
[INFO] [stdout] 526a33f807b68044a1bcaa4888afde8ec9bf939fea7ae58acea4a684ed9c0fd2