[INFO] fetching crate preproc 0.2.0...
[INFO] checking preproc-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate preproc 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate preproc 0.2.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate preproc 0.2.0
[INFO] finished tweaking crates.io crate preproc 0.2.0
[INFO] tweaked toml for crates.io crate preproc 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v3.2.25 (latest: v4.5.4)
[INFO] [stderr]       Adding clap_lex v0.2.4 (latest: v0.7.0)
[INFO] [stderr]       Adding criterion v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding hashbrown v0.13.2 (latest: v0.14.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf9d8f2907c29148483e0f0a194df7b5b09005e93e55bed0a732cfdf0e797095
[INFO] running `Command { std: "docker" "start" "-a" "bf9d8f2907c29148483e0f0a194df7b5b09005e93e55bed0a732cfdf0e797095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf9d8f2907c29148483e0f0a194df7b5b09005e93e55bed0a732cfdf0e797095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf9d8f2907c29148483e0f0a194df7b5b09005e93e55bed0a732cfdf0e797095", kill_on_drop: false }`
[INFO] [stdout] bf9d8f2907c29148483e0f0a194df7b5b09005e93e55bed0a732cfdf0e797095
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1bf1aa39897c0633bec4492070d6e5e3a879ba562473a726cb448303ede3ff9
[INFO] running `Command { std: "docker" "start" "-a" "e1bf1aa39897c0633bec4492070d6e5e3a879ba562473a726cb448303ede3ff9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking beef v0.5.2
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking preproc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::{boxed::Box, rc::Rc, string::String, vec, vec::Vec};
[INFO] [stdout]   |             ^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Box` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::{boxed::Box, rc::Rc, string::String, vec, vec::Vec};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:54
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::{boxed::Box, rc::Rc, string::String, vec, vec::Vec};
[INFO] [stdout]   |                                                      ^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/exp.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::{format, vec::Vec};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/sse2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:54
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::{boxed::Box, rc::Rc, string::String, vec, vec::Vec};
[INFO] [stdout]   |                                                      ^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/exp.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::{format, vec::Vec};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/sse2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `Command { std: "docker" "inspect" "e1bf1aa39897c0633bec4492070d6e5e3a879ba562473a726cb448303ede3ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1bf1aa39897c0633bec4492070d6e5e3a879ba562473a726cb448303ede3ff9", kill_on_drop: false }`
[INFO] [stdout] e1bf1aa39897c0633bec4492070d6e5e3a879ba562473a726cb448303ede3ff9