[INFO] cloning repository https://github.com/sb-child/dz-print
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sb-child/dz-print" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fdz-print", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fdz-print'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5af6f244cd5ed0c9736e85717415cb977b43f246
[INFO] checking sb-child/dz-print against try#e117153a45c546e883c1f91d82611775fcaeffe0 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsb-child%2Fdz-print" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sb-child/dz-print
[INFO] finished tweaking git repo https://github.com/sb-child/dz-print
[INFO] tweaked toml for git repo https://github.com/sb-child/dz-print written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sb-child/dz-print on toolchain e117153a45c546e883c1f91d82611775fcaeffe0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sb-child/dz-print 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" "+e117153a45c546e883c1f91d82611775fcaeffe0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af991c3beb5912a17da425268f7e5140ce8214de4abd7e014c055170635c52c3
[INFO] running `Command { std: "docker" "start" "-a" "af991c3beb5912a17da425268f7e5140ce8214de4abd7e014c055170635c52c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af991c3beb5912a17da425268f7e5140ce8214de4abd7e014c055170635c52c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af991c3beb5912a17da425268f7e5140ce8214de4abd7e014c055170635c52c3", kill_on_drop: false }`
[INFO] [stdout] af991c3beb5912a17da425268f7e5140ce8214de4abd7e014c055170635c52c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 761e5bcf333d232a35c50ec6b0539582fd71a7d6bbd511147302e3d757818e23
[INFO] running `Command { std: "docker" "start" "-a" "761e5bcf333d232a35c50ec6b0539582fd71a7d6bbd511147302e3d757818e23", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/backend/mod.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     sync::{Arc, Mutex},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/backend/mod.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     sync::{Arc, Mutex},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FromPrimitive`
[INFO] [stdout]  --> src/scheduler/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToPrimitive`
[INFO] [stdout]  --> src/scheduler/mod.rs:6:33
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]   |                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FromPrimitive`
[INFO] [stdout]  --> src/scheduler/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToPrimitive`
[INFO] [stdout]  --> src/scheduler/mod.rs:6:33
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]   |                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/backend/mod.rs:416:29
[INFO] [stdout]     |
[INFO] [stdout] 416 | ...                   e @ _ => {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/backend/mod.rs:303:33
[INFO] [stdout]     |
[INFO] [stdout] 303 | ...                   Err(e) => {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/backend/mod.rs:416:29
[INFO] [stdout]     |
[INFO] [stdout] 416 | ...                   e @ _ => {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/backend/mod.rs:303:33
[INFO] [stdout]     |
[INFO] [stdout] 303 | ...                   Err(e) => {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `config` is never read
[INFO] [stdout]   --> src/backend/mod.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Endpoint {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 35 |     config: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `config` is never read
[INFO] [stdout]   --> src/backend/mod.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Endpoint {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 35 |     config: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time::Duration`
[INFO] [stdout]  --> src/bin/dzprint.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time::Duration`
[INFO] [stdout]  --> src/bin/dzprint.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> src/bin/dzprint.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 let (cmd, ch) = backend::Command::without_response(c);
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> src/bin/dzprint.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 let (cmd, ch) = backend::Command::without_response(c);
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/bin/dzcli.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let args = CommandArgs::parse();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/bin/dzcli.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let args = CommandArgs::parse();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "761e5bcf333d232a35c50ec6b0539582fd71a7d6bbd511147302e3d757818e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "761e5bcf333d232a35c50ec6b0539582fd71a7d6bbd511147302e3d757818e23", kill_on_drop: false }`
[INFO] [stdout] 761e5bcf333d232a35c50ec6b0539582fd71a7d6bbd511147302e3d757818e23