[INFO] fetching crate citp 0.2.1...
[INFO] checking citp-0.2.1 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate citp 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate citp 0.2.1 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate citp 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate citp 0.2.1
[INFO] tweaked toml for crates.io crate citp 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate citp 0.2.1 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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d26e7e9b4368ac6f28ae84888f13856b5b310d09b14dd9a58e2a960ad33491e5
[INFO] running `Command { std: "docker" "start" "-a" "d26e7e9b4368ac6f28ae84888f13856b5b310d09b14dd9a58e2a960ad33491e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d26e7e9b4368ac6f28ae84888f13856b5b310d09b14dd9a58e2a960ad33491e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d26e7e9b4368ac6f28ae84888f13856b5b310d09b14dd9a58e2a960ad33491e5", kill_on_drop: false }`
[INFO] [stdout] d26e7e9b4368ac6f28ae84888f13856b5b310d09b14dd9a58e2a960ad33491e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48e77d4c90dcddad8042d02d8a8ca3908c8be68086174dd6f90f9d10a32cd2de
[INFO] running `Command { std: "docker" "start" "-a" "48e77d4c90dcddad8042d02d8a8ca3908c8be68086174dd6f90f9d10a32cd2de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking ucs2 v0.3.2
[INFO] [stderr]     Checking citp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/protocol/mod.rs:465:59
[INFO] [stdout]     |
[INFO] [stdout] 465 |         let name = std::str::from_utf8(&utf8_buf).unwrap().clone().to_string();
[INFO] [stdout]     |                                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.4
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: value assigned to `received` is never read
[INFO] [stdout]    --> examples/demo/citp_tcp.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |             received = received.drain(header.message_size as usize..).collect();
[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: method `send_message` is never used
[INFO] [stdout]   --> examples/demo/citp_tcp.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl CitpTcp {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn send_message(&mut self, message: &str) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/protocol/mod.rs:465:59
[INFO] [stdout]     |
[INFO] [stdout] 465 |         let name = std::str::from_utf8(&utf8_buf).unwrap().clone().to_string();
[INFO] [stdout]     |                                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.87s
[INFO] running `Command { std: "docker" "inspect" "48e77d4c90dcddad8042d02d8a8ca3908c8be68086174dd6f90f9d10a32cd2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e77d4c90dcddad8042d02d8a8ca3908c8be68086174dd6f90f9d10a32cd2de", kill_on_drop: false }`
[INFO] [stdout] 48e77d4c90dcddad8042d02d8a8ca3908c8be68086174dd6f90f9d10a32cd2de