[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 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkroemeke%2Fwordtop" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kroemeke/wordtop on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0-tc1/source/Cargo.toml
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating wordtop v0.1.5 (/workspace/builds/worker-0-tc1/source) -> v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05c39d822ecbbc0ed5e1bdd4f74b5123ca4dff2ad801784393fdbb86ce88d435
[INFO] running `Command { std: "docker" "start" "-a" "05c39d822ecbbc0ed5e1bdd4f74b5123ca4dff2ad801784393fdbb86ce88d435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05c39d822ecbbc0ed5e1bdd4f74b5123ca4dff2ad801784393fdbb86ce88d435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05c39d822ecbbc0ed5e1bdd4f74b5123ca4dff2ad801784393fdbb86ce88d435", kill_on_drop: false }`
[INFO] [stdout] 05c39d822ecbbc0ed5e1bdd4f74b5123ca4dff2ad801784393fdbb86ce88d435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed0a846d8cf44dfc6549c88dc1d67a7f40985fc4ee8ebe288546b1224c21e605
[INFO] running `Command { std: "docker" "start" "-a" "ed0a846d8cf44dfc6549c88dc1d67a7f40985fc4ee8ebe288546b1224c21e605", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[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] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]   --> src/calculate.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use super::*;
[INFO] [stdout]    |         -------- the item `HashMap` is already imported here
[INFO] [stdout] 49 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]   --> src/calculate.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[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:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being 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 `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: unused variable: `k`
[INFO] [stdout]   --> src/print.rs:76:18
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/print.rs:76:25
[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] [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)]` 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "ed0a846d8cf44dfc6549c88dc1d67a7f40985fc4ee8ebe288546b1224c21e605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed0a846d8cf44dfc6549c88dc1d67a7f40985fc4ee8ebe288546b1224c21e605", kill_on_drop: false }`
[INFO] [stdout] ed0a846d8cf44dfc6549c88dc1d67a7f40985fc4ee8ebe288546b1224c21e605