[INFO] fetching crate bucket_vec 0.8.0...
[INFO] checking bucket_vec-0.8.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate bucket_vec 0.8.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate bucket_vec 0.8.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bucket_vec 0.8.0
[INFO] finished tweaking crates.io crate bucket_vec 0.8.0
[INFO] tweaked toml for crates.io crate bucket_vec 0.8.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 89 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.5.2 (available: v0.7.6)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding bitvec v0.17.4 (available: v1.0.1)
[INFO] [stderr]       Adding byte-slice-cast v0.3.5 (available: v1.2.2)
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.18)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (available: v0.5.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (available: v0.2.15)
[INFO] [stderr]       Adding half v1.8.3 (available: v2.4.1)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding parity-scale-codec v1.3.7 (available: v3.6.12)
[INFO] [stderr]       Adding paste v0.1.18 (available: v1.0.15)
[INFO] [stderr]       Adding radium v0.3.0 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (available: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (available: v0.3.2)
[INFO] [stderr]       Adding textwrap v0.11.0 (available: v0.16.1)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9def196089434d75f5a6669d1de82563bdfb495eb7dd811dd55140cfadb3cb7c
[INFO] running `Command { std: "docker" "start" "-a" "9def196089434d75f5a6669d1de82563bdfb495eb7dd811dd55140cfadb3cb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9def196089434d75f5a6669d1de82563bdfb495eb7dd811dd55140cfadb3cb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9def196089434d75f5a6669d1de82563bdfb495eb7dd811dd55140cfadb3cb7c", kill_on_drop: false }`
[INFO] [stdout] 9def196089434d75f5a6669d1de82563bdfb495eb7dd811dd55140cfadb3cb7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcfb183b42b7752336bd48ef68c3f1f8b534b33f94dc82849134da8b2978dacd
[INFO] running `Command { std: "docker" "start" "-a" "dcfb183b42b7752336bd48ef68c3f1f8b534b33f94dc82849134da8b2978dacd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking parity-scale-codec v1.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking bucket_vec v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `abs` is never used
[INFO] [stdout]  --> src/math.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait FloatExt {
[INFO] [stdout]   |           -------- method in this trait
[INFO] [stdout] 5 |     /// Calculates the absolute value for the float.
[INFO] [stdout] 6 |     fn abs(self) -> Self;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: method `abs` is never used
[INFO] [stdout]  --> src/math.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait FloatExt {
[INFO] [stdout]   |           -------- method in this trait
[INFO] [stdout] 5 |     /// Calculates the absolute value for the float.
[INFO] [stdout] 6 |     fn abs(self) -> Self;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.14s
[INFO] running `Command { std: "docker" "inspect" "dcfb183b42b7752336bd48ef68c3f1f8b534b33f94dc82849134da8b2978dacd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfb183b42b7752336bd48ef68c3f1f8b534b33f94dc82849134da8b2978dacd", kill_on_drop: false }`
[INFO] [stdout] dcfb183b42b7752336bd48ef68c3f1f8b534b33f94dc82849134da8b2978dacd