[INFO] cloning repository https://github.com/JamesWP/chacha-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JamesWP/chacha-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesWP%2Fchacha-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesWP%2Fchacha-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a0b8c58426d3851dd0f0e5e4d0bd9da280a49c3
[INFO] building JamesWP/chacha-rs against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamesWP%2Fchacha-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JamesWP/chacha-rs on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JamesWP/chacha-rs
[INFO] finished tweaking git repo https://github.com/JamesWP/chacha-rs
[INFO] tweaked toml for git repo https://github.com/JamesWP/chacha-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JamesWP/chacha-rs 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ec67c49530d7c4b79cc304a37f33632270c9665ae9eac86d75407cc11f0f1c4
[INFO] running `Command { std: "docker" "start" "-a" "2ec67c49530d7c4b79cc304a37f33632270c9665ae9eac86d75407cc11f0f1c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ec67c49530d7c4b79cc304a37f33632270c9665ae9eac86d75407cc11f0f1c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ec67c49530d7c4b79cc304a37f33632270c9665ae9eac86d75407cc11f0f1c4", kill_on_drop: false }`
[INFO] [stdout] 2ec67c49530d7c4b79cc304a37f33632270c9665ae9eac86d75407cc11f0f1c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10cf01398cb2564414171f386e6ce2c568eba2aed3177ac931ec995b83d7dd1b
[INFO] running `Command { std: "docker" "start" "-a" "10cf01398cb2564414171f386e6ce2c568eba2aed3177ac931ec995b83d7dd1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.3
[INFO] [stderr]    Compiling chacha-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> src/main.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::{Write, stdout};
[INFO] [stdout]   |                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `hash` and `ops::Deref`
[INFO] [stdout]  --> src/main.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{fs::{File, OpenOptions}, hash, io, ops::Deref, time::SystemTime};
[INFO] [stdout]   |                                    ^^^^      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]   --> src/main.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use clap::{clap_app, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nonce_first_word` is never read
[INFO] [stdout]   --> src/chacha.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ChaChaState {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 15 |     keystream: ChaChaBlock,
[INFO] [stdout] 16 |     nonce_first_word: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_counter` is never used
[INFO] [stdout]   --> src/chacha.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl ChaChaState {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn set_counter(&mut self, counter: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "10cf01398cb2564414171f386e6ce2c568eba2aed3177ac931ec995b83d7dd1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10cf01398cb2564414171f386e6ce2c568eba2aed3177ac931ec995b83d7dd1b", kill_on_drop: false }`
[INFO] [stdout] 10cf01398cb2564414171f386e6ce2c568eba2aed3177ac931ec995b83d7dd1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 936c19bc57bb06855136bef795bf87e7d02ada00d48a849b6340fa10306add0e
[INFO] running `Command { std: "docker" "start" "-a" "936c19bc57bb06855136bef795bf87e7d02ada00d48a849b6340fa10306add0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling chacha-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> src/main.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::{Write, stdout};
[INFO] [stdout]   |                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `hash` and `ops::Deref`
[INFO] [stdout]  --> src/main.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{fs::{File, OpenOptions}, hash, io, ops::Deref, time::SystemTime};
[INFO] [stdout]   |                                    ^^^^      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]   --> src/main.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use clap::{clap_app, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "936c19bc57bb06855136bef795bf87e7d02ada00d48a849b6340fa10306add0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936c19bc57bb06855136bef795bf87e7d02ada00d48a849b6340fa10306add0e", kill_on_drop: false }`
[INFO] [stdout] 936c19bc57bb06855136bef795bf87e7d02ada00d48a849b6340fa10306add0e