[INFO] fetching crate names-changer 0.2.1...
[INFO] checking names-changer-0.2.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate names-changer 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate names-changer 0.2.1
[INFO] finished tweaking crates.io crate names-changer 0.2.1
[INFO] tweaked toml for crates.io crate names-changer 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate names-changer 0.2.1 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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] [stderr]       Adding heck v0.3.3 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4701196d552b6f8f3463e6b886846e2b29d563bdd3475c5937e58529ce25f8ae
[INFO] running `Command { std: "docker" "start" "-a" "4701196d552b6f8f3463e6b886846e2b29d563bdd3475c5937e58529ce25f8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4701196d552b6f8f3463e6b886846e2b29d563bdd3475c5937e58529ce25f8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4701196d552b6f8f3463e6b886846e2b29d563bdd3475c5937e58529ce25f8ae", kill_on_drop: false }`
[INFO] [stdout] 4701196d552b6f8f3463e6b886846e2b29d563bdd3475c5937e58529ce25f8ae
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11583e093325031cf2ab529ee7ad4de6bef0c7b064c87d63de0d448bd8b595e9
[INFO] running `Command { std: "docker" "start" "-a" "11583e093325031cf2ab529ee7ad4de6bef0c7b064c87d63de0d448bd8b595e9", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking unicode-segmentation v1.13.2
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking names-changer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `change_word` is never read
[INFO] [stdout]   --> src/names_changer.rs:37:35
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut change_word = String::new();
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 60 |                     change_word = word.to_string();
[INFO] [stdout]    |                     ----------- `change_word` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `change_word` is never read
[INFO] [stdout]   --> src/names_changer.rs:37:35
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut change_word = String::new();
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 60 |                     change_word = word.to_string();
[INFO] [stdout]    |                     ----------- `change_word` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> benches/bench.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "11583e093325031cf2ab529ee7ad4de6bef0c7b064c87d63de0d448bd8b595e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11583e093325031cf2ab529ee7ad4de6bef0c7b064c87d63de0d448bd8b595e9", kill_on_drop: false }`
[INFO] [stdout] 11583e093325031cf2ab529ee7ad4de6bef0c7b064c87d63de0d448bd8b595e9
