[INFO] fetching crate im-rc 15.1.0...
[INFO] checking im-rc-15.1.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate im-rc 15.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate im-rc 15.1.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate im-rc 15.1.0
[INFO] finished tweaking crates.io crate im-rc 15.1.0
[INFO] tweaked toml for crates.io crate im-rc 15.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arbitrary v1.3.2
[INFO] [stderr]   Downloaded refpool v0.4.3
[INFO] [stderr]   Downloaded metrohash v1.0.6
[INFO] [stderr]   Downloaded proptest v1.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f29ab2f70eb3c5a0330f3df0beb2ae8bd0ea2f3554108a31b1cc85e4a5cea16
[INFO] running `Command { std: "docker" "start" "-a" "4f29ab2f70eb3c5a0330f3df0beb2ae8bd0ea2f3554108a31b1cc85e4a5cea16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f29ab2f70eb3c5a0330f3df0beb2ae8bd0ea2f3554108a31b1cc85e4a5cea16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f29ab2f70eb3c5a0330f3df0beb2ae8bd0ea2f3554108a31b1cc85e4a5cea16", kill_on_drop: false }`
[INFO] [stdout] 4f29ab2f70eb3c5a0330f3df0beb2ae8bd0ea2f3554108a31b1cc85e4a5cea16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0546cac537677f69eafcde4748885a3f2fae1ddaedc70c810876743900a8e0c
[INFO] running `Command { std: "docker" "start" "-a" "d0546cac537677f69eafcde4748885a3f2fae1ddaedc70c810876743900a8e0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling im-rc v15.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:341:41
[INFO] [stdout]     |
[INFO] [stdout] 341 | #![cfg_attr(has_specialisation, feature(specialization))]
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tempfile v3.10.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking proptest v1.4.0
[INFO] [stderr]    Compiling proptest-derive v0.3.0
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:341:41
[INFO] [stdout]     |
[INFO] [stdout] 341 | #![cfg_attr(has_specialisation, feature(specialization))]
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:141:34
[INFO] [stdout]     |
[INFO] [stdout] 141 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:167:32
[INFO] [stdout]     |
[INFO] [stdout] 167 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `K` does not implement `Deref`, so calling `deref` on `&K` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:167:43
[INFO] [stdout]     |
[INFO] [stdout] 167 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `V` does not implement `Deref`, so calling `deref` on `&V` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `K` does not implement `Deref`, so calling `deref` on `&K` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:201:43
[INFO] [stdout]     |
[INFO] [stdout] 201 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `V` does not implement `Deref`, so calling `deref` on `&V` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:227:34
[INFO] [stdout]     |
[INFO] [stdout] 227 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:251:34
[INFO] [stdout]     |
[INFO] [stdout] 251 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.67s
[INFO] running `Command { std: "docker" "inspect" "d0546cac537677f69eafcde4748885a3f2fae1ddaedc70c810876743900a8e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0546cac537677f69eafcde4748885a3f2fae1ddaedc70c810876743900a8e0c", kill_on_drop: false }`
[INFO] [stdout] d0546cac537677f69eafcde4748885a3f2fae1ddaedc70c810876743900a8e0c
