[INFO] cloning repository https://github.com/ahouts/mbuffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahouts/mbuffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fmbuffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fmbuffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e198c4cd8762a038dde0af1710f32f20a0986edf
[INFO] testing ahouts/mbuffer against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fmbuffer" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahouts/mbuffer on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahouts/mbuffer
[INFO] finished tweaking git repo https://github.com/ahouts/mbuffer
[INFO] tweaked toml for git repo https://github.com/ahouts/mbuffer written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/mbuffer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4767d0923c26b02f062e8ad51e25f8d6483fe316a1f848e2bbf6a6e8c6446926
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4767d0923c26b02f062e8ad51e25f8d6483fe316a1f848e2bbf6a6e8c6446926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4767d0923c26b02f062e8ad51e25f8d6483fe316a1f848e2bbf6a6e8c6446926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4767d0923c26b02f062e8ad51e25f8d6483fe316a1f848e2bbf6a6e8c6446926", kill_on_drop: false }`
[INFO] [stdout] 4767d0923c26b02f062e8ad51e25f8d6483fe316a1f848e2bbf6a6e8c6446926
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 129c21c471fcb91341c95049fcb1dbe829fa87da01c6fdbf5fb9e0f23ad199b6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "129c21c471fcb91341c95049fcb1dbe829fa87da01c6fdbf5fb9e0f23ad199b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling mbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buff/mod.rs:17:70
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Read + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buff/mod.rs:17:95
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stdout]    |                                                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.55s
[INFO] running `Command { std: "docker" "inspect" "129c21c471fcb91341c95049fcb1dbe829fa87da01c6fdbf5fb9e0f23ad199b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "129c21c471fcb91341c95049fcb1dbe829fa87da01c6fdbf5fb9e0f23ad199b6", kill_on_drop: false }`
[INFO] [stdout] 129c21c471fcb91341c95049fcb1dbe829fa87da01c6fdbf5fb9e0f23ad199b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 366dc88f872e6a7159814c59ac8eac92e5978456501b8a023ed6c61ac4cf8545
[INFO] running `Command { std: "docker" "start" "-a" "366dc88f872e6a7159814c59ac8eac92e5978456501b8a023ed6c61ac4cf8545", kill_on_drop: false }`
[INFO] [stderr]    Compiling mbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buff/mod.rs:17:70
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Read + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buff/mod.rs:17:95
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stdout]    |                                                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "366dc88f872e6a7159814c59ac8eac92e5978456501b8a023ed6c61ac4cf8545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366dc88f872e6a7159814c59ac8eac92e5978456501b8a023ed6c61ac4cf8545", kill_on_drop: false }`
[INFO] [stdout] 366dc88f872e6a7159814c59ac8eac92e5978456501b8a023ed6c61ac4cf8545
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc2c8c1c885aeed4eaf15ab07c5ef170710a686b3a58a443e7c4cad9ece062ca
[INFO] running `Command { std: "docker" "start" "-a" "bc2c8c1c885aeed4eaf15ab07c5ef170710a686b3a58a443e7c4cad9ece062ca", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/buff/mod.rs:17:70
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stdout] 
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Read + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/buff/mod.rs:17:95
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stderr]    |                                                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mbuffer-a7c3fb5331e64ff2
[INFO] running `Command { std: "docker" "inspect" "bc2c8c1c885aeed4eaf15ab07c5ef170710a686b3a58a443e7c4cad9ece062ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc2c8c1c885aeed4eaf15ab07c5ef170710a686b3a58a443e7c4cad9ece062ca", kill_on_drop: false }`
[INFO] [stdout] bc2c8c1c885aeed4eaf15ab07c5ef170710a686b3a58a443e7c4cad9ece062ca