[INFO] fetching crate from 0.1.4...
[INFO] checking from-0.1.4 against try#51b1964e35e5e26f8cd938940f0da6f7b5cc54fc for pr-138176
[INFO] extracting crate from 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate from 0.1.4 on toolchain 51b1964e35e5e26f8cd938940f0da6f7b5cc54fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from 0.1.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate from 0.1.4
[INFO] tweaked toml for crates.io crate from 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8ddbf062c6e233206d5431495ef8b4e8046b40f9641c41f4de81809bb9590c9
[INFO] running `Command { std: "docker" "start" "-a" "a8ddbf062c6e233206d5431495ef8b4e8046b40f9641c41f4de81809bb9590c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8ddbf062c6e233206d5431495ef8b4e8046b40f9641c41f4de81809bb9590c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ddbf062c6e233206d5431495ef8b4e8046b40f9641c41f4de81809bb9590c9", kill_on_drop: false }`
[INFO] [stdout] a8ddbf062c6e233206d5431495ef8b4e8046b40f9641c41f4de81809bb9590c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba5a950f8710f09818f9fdba4bb8b405b0d72f2773541c073856f55a145a7bf9
[INFO] running `Command { std: "docker" "start" "-a" "ba5a950f8710f09818f9fdba4bb8b405b0d72f2773541c073856f55a145a7bf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]    Compiling from_proc v0.1.2
[INFO] [stderr]    Compiling loop-code v0.5.2
[INFO] [stderr]     Checking from v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Err`, `Errs`, `SyntaxErr`, and `ValidationErr`
[INFO] [stdout]   --> src/err/err.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 97 |     use super::{Err, Errs, SyntaxErr, ValidationErr};
[INFO] [stdout]    |                 ^^^  ^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.82s
[INFO] running `Command { std: "docker" "inspect" "ba5a950f8710f09818f9fdba4bb8b405b0d72f2773541c073856f55a145a7bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba5a950f8710f09818f9fdba4bb8b405b0d72f2773541c073856f55a145a7bf9", kill_on_drop: false }`
[INFO] [stdout] ba5a950f8710f09818f9fdba4bb8b405b0d72f2773541c073856f55a145a7bf9