[INFO] fetching crate qrustcp 2.0.0...
[INFO] checking qrustcp-2.0.0 against master#377656d3dd3f9c23a9c8713e163f4365a5261a84 for pr-146470-4
[INFO] extracting crate qrustcp 2.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate qrustcp 2.0.0
[INFO] finished tweaking crates.io crate qrustcp 2.0.0
[INFO] tweaked toml for crates.io crate qrustcp 2.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate qrustcp 2.0.0 on toolchain 377656d3dd3f9c23a9c8713e163f4365a5261a84
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qrustcp 2.0.0 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" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "d16790268620d1bf0a978b0e94e437dc6a42d44519e5de00c5caaa3cadd32e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d16790268620d1bf0a978b0e94e437dc6a42d44519e5de00c5caaa3cadd32e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d16790268620d1bf0a978b0e94e437dc6a42d44519e5de00c5caaa3cadd32e83", kill_on_drop: false }`
[INFO] [stdout] d16790268620d1bf0a978b0e94e437dc6a42d44519e5de00c5caaa3cadd32e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dc88c66ad78e9989a3a137129eb2dd151d3d3a3d078b367b389e6df2c2395cc
[INFO] running `Command { std: "docker" "start" "-a" "4dc88c66ad78e9989a3a137129eb2dd151d3d3a3d078b367b389e6df2c2395cc", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]   --> src/compress/nocompress.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |             if let Ok(bytes) = copy(file, output) {
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `compression`
[INFO] [stdout]    --> src/server/send.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (compression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `NoCompression`
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (cli::CompressionFormat::NoCompression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |           ++++++++++++++++++++++++++
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (_compression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]   --> src/compress/nocompress.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |             if let Ok(bytes) = copy(file, output) {
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `compression`
[INFO] [stdout]    --> src/server/send.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (compression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `NoCompression`
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (cli::CompressionFormat::NoCompression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |           ++++++++++++++++++++++++++
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let (_compression, archive_name) = match args.files.as_slice() {
[INFO] [stdout]     |          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 55.15s
[INFO] running `Command { std: "docker" "inspect" "4dc88c66ad78e9989a3a137129eb2dd151d3d3a3d078b367b389e6df2c2395cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dc88c66ad78e9989a3a137129eb2dd151d3d3a3d078b367b389e6df2c2395cc", kill_on_drop: false }`
[INFO] [stdout] 4dc88c66ad78e9989a3a137129eb2dd151d3d3a3d078b367b389e6df2c2395cc