[INFO] cloning repository https://github.com/Sonahit/rust-mem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sonahit/rust-mem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 246f1827c7555bf75169f202308a21baf3acf620
[INFO] testing Sonahit/rust-mem against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sonahit/rust-mem on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sonahit/rust-mem
[INFO] finished tweaking git repo https://github.com/Sonahit/rust-mem
[INFO] tweaked toml for git repo https://github.com/Sonahit/rust-mem written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Sonahit/rust-mem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Sonahit/rust-hook`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dded4ecbf17198cd97eeaa95af16dc4025c8227268f5da310f22033c2d1878b8
[INFO] running `Command { std: "docker" "start" "-a" "dded4ecbf17198cd97eeaa95af16dc4025c8227268f5da310f22033c2d1878b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dded4ecbf17198cd97eeaa95af16dc4025c8227268f5da310f22033c2d1878b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dded4ecbf17198cd97eeaa95af16dc4025c8227268f5da310f22033c2d1878b8", kill_on_drop: false }`
[INFO] [stdout] dded4ecbf17198cd97eeaa95af16dc4025c8227268f5da310f22033c2d1878b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aefe80d190281e3bd858fa116132fad7a086e95d9f087c3232b0a3b98eb764a7
[INFO] running `Command { std: "docker" "start" "-a" "aefe80d190281e3bd858fa116132fad7a086e95d9f087c3232b0a3b98eb764a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling hook_protocol v0.1.0 (https://github.com/Sonahit/rust-hook#db05feeb)
[INFO] [stderr]    Compiling mem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_file_concurrent`
[INFO] [stdout]  --> src/read_file.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_file_concurrent(filename: &str) -> Result<Vec<u8>, std::io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drain_reader`
[INFO] [stdout]   --> src/read_file.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn drain_reader(reader: &mut BufReader<File>, sender: Sender<u8>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.54s
[INFO] running `Command { std: "docker" "inspect" "aefe80d190281e3bd858fa116132fad7a086e95d9f087c3232b0a3b98eb764a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aefe80d190281e3bd858fa116132fad7a086e95d9f087c3232b0a3b98eb764a7", kill_on_drop: false }`
[INFO] [stdout] aefe80d190281e3bd858fa116132fad7a086e95d9f087c3232b0a3b98eb764a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a68b1ddaeb9e46081297d7dcbac8d1ab3fae27937d347bd4ad36bdaf61fe70b
[INFO] running `Command { std: "docker" "start" "-a" "2a68b1ddaeb9e46081297d7dcbac8d1ab3fae27937d347bd4ad36bdaf61fe70b", kill_on_drop: false }`
[INFO] [stderr]    Compiling mem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_file_concurrent`
[INFO] [stdout]  --> src/read_file.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_file_concurrent(filename: &str) -> Result<Vec<u8>, std::io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drain_reader`
[INFO] [stdout]   --> src/read_file.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn drain_reader(reader: &mut BufReader<File>, sender: Sender<u8>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "2a68b1ddaeb9e46081297d7dcbac8d1ab3fae27937d347bd4ad36bdaf61fe70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a68b1ddaeb9e46081297d7dcbac8d1ab3fae27937d347bd4ad36bdaf61fe70b", kill_on_drop: false }`
[INFO] [stdout] 2a68b1ddaeb9e46081297d7dcbac8d1ab3fae27937d347bd4ad36bdaf61fe70b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a54f7e01037d37c0f4da0204210a1b4fab2bdcdb9db4e6af8350f963fb5d36bb
[INFO] running `Command { std: "docker" "start" "-a" "a54f7e01037d37c0f4da0204210a1b4fab2bdcdb9db4e6af8350f963fb5d36bb", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `read_file_concurrent`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/read_file.rs:8:8
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 8 | pub fn read_file_concurrent(filename: &str) -> Result<Vec<u8>, std::io::Error> {
[INFO] [stdout] 
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `drain_reader`
[INFO] [stderr]   --> src/read_file.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn drain_reader(reader: &mut BufReader<File>, sender: Sender<u8>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mem` (bin "mem" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mem-14ffee46ec52dd90)
[INFO] running `Command { std: "docker" "inspect" "a54f7e01037d37c0f4da0204210a1b4fab2bdcdb9db4e6af8350f963fb5d36bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a54f7e01037d37c0f4da0204210a1b4fab2bdcdb9db4e6af8350f963fb5d36bb", kill_on_drop: false }`
[INFO] [stdout] a54f7e01037d37c0f4da0204210a1b4fab2bdcdb9db4e6af8350f963fb5d36bb