[INFO] cloning repository https://github.com/kroemeke/wordtop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kroemeke/wordtop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cb2dad33f02d9c7b252f99c2672cf113bed455a
[INFO] checking kroemeke/wordtop/2cb2dad33f02d9c7b252f99c2672cf113bed455a against master#f28ac764c36004fa6a6e098d15b4016a838c13c6 for pr-158320
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kroemeke/wordtop
[INFO] finished tweaking git repo https://github.com/kroemeke/wordtop
[INFO] tweaked toml for git repo https://github.com/kroemeke/wordtop written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kroemeke/wordtop on toolchain f28ac764c36004fa6a6e098d15b4016a838c13c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f28ac764c36004fa6a6e098d15b4016a838c13c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kroemeke/wordtop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f28ac764c36004fa6a6e098d15b4016a838c13c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713
[INFO] running `Command { std: "docker" "start" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713" "/opt/rustwide/cargo-home/bin/cargo" "+f28ac764c36004fa6a6e098d15b4016a838c13c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713" "/opt/rustwide/cargo-home/bin/cargo" "+f28ac764c36004fa6a6e098d15b4016a838c13c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking nix v0.23.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking wordtop v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.51s
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]   --> src/calculate.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 87 |         sorted_vec = new_map.iter().collect(); // map to vector
[INFO] [stdout]    |         ---------- `sorted_vec` 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 `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]     |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 104 |         sorted_vec = rate_map.iter().collect(); // map to vector
[INFO] [stdout]     |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/print.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 count = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]   --> src/calculate.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 87 |         sorted_vec = new_map.iter().collect(); // map to vector
[INFO] [stdout]    |         ---------- `sorted_vec` 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 `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]     |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 104 |         sorted_vec = rate_map.iter().collect(); // map to vector
[INFO] [stdout]     |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/print.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 count = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/print.rs:76:14
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |              ----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/print.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/print.rs:76:14
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/print.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713", kill_on_drop: false }`
[INFO] [stdout] f9792a0ea06b39466c8d46d54824128bfd3c416b23b6809b6f1d326e1692a713
