[INFO] cloning repository https://github.com/ben0x539/twif
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ben0x539/twif" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben0x539%2Ftwif", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben0x539%2Ftwif'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87c35f915ea49fd97c8b4cf9b55ba5a8c61bd9b0
[INFO] testing ben0x539/twif against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben0x539%2Ftwif" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ben0x539/twif on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ben0x539/twif
[INFO] finished tweaking git repo https://github.com/ben0x539/twif
[INFO] tweaked toml for git repo https://github.com/ben0x539/twif written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ben0x539/twif already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f91d7cc94b4ab775f00a20bb7d706311debb8d1954dc1bf359e679f73de921fe
[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" "f91d7cc94b4ab775f00a20bb7d706311debb8d1954dc1bf359e679f73de921fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91d7cc94b4ab775f00a20bb7d706311debb8d1954dc1bf359e679f73de921fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91d7cc94b4ab775f00a20bb7d706311debb8d1954dc1bf359e679f73de921fe", kill_on_drop: false }`
[INFO] [stdout] f91d7cc94b4ab775f00a20bb7d706311debb8d1954dc1bf359e679f73de921fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e658618e9785bd8c11bee33c4e363c9e51f553be5aa8793dfdf6224d80487bda
[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" "e658618e9785bd8c11bee33c4e363c9e51f553be5aa8793dfdf6224d80487bda", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling eyre v0.3.0
[INFO] [stderr]    Compiling indenter v0.1.1
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling sharded-slab v0.0.8
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]    Compiling paw-attributes v1.0.2
[INFO] [stderr]    Compiling spandoc v0.1.2
[INFO] [stderr]    Compiling paw v1.0.0
[INFO] [stderr]    Compiling tokio v0.2.11
[INFO] [stderr]    Compiling trackable v0.2.23
[INFO] [stderr]    Compiling hls_m3u8 v0.2.1
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling tracing-futures v0.2.3
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.2.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling hyper v0.13.2
[INFO] [stderr]    Compiling hyper-tls v0.4.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling tracing-serde v0.1.0
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling tracing-subscriber v0.2.1
[INFO] [stderr]    Compiling reqwest v0.10.3
[INFO] [stderr]    Compiling tracing-error v0.1.1
[INFO] [stderr]    Compiling twif v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 140 | /         loop {
[INFO] [stdout] 141 | |             let n = child_output.read(&mut buf).await?;
[INFO] [stdout] 142 | |             if n <= 0 {
[INFO] [stdout] 143 | |                 continue;
[INFO] [stdout] ...   |
[INFO] [stdout] 158 | |             }
[INFO] [stdout] 159 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 160 |           Ok::<_, eyre::ErrReport>(())
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 34s
[INFO] running `Command { std: "docker" "inspect" "e658618e9785bd8c11bee33c4e363c9e51f553be5aa8793dfdf6224d80487bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e658618e9785bd8c11bee33c4e363c9e51f553be5aa8793dfdf6224d80487bda", kill_on_drop: false }`
[INFO] [stdout] e658618e9785bd8c11bee33c4e363c9e51f553be5aa8793dfdf6224d80487bda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26d7fc1d037cbb68f8ba2d1c67556871c1496471b0c574109eb9f7c8a81477ca
[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" "26d7fc1d037cbb68f8ba2d1c67556871c1496471b0c574109eb9f7c8a81477ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling twif v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 140 | /         loop {
[INFO] [stdout] 141 | |             let n = child_output.read(&mut buf).await?;
[INFO] [stdout] 142 | |             if n <= 0 {
[INFO] [stdout] 143 | |                 continue;
[INFO] [stdout] ...   |
[INFO] [stdout] 158 | |             }
[INFO] [stdout] 159 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 160 |           Ok::<_, eyre::ErrReport>(())
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `Command { std: "docker" "inspect" "26d7fc1d037cbb68f8ba2d1c67556871c1496471b0c574109eb9f7c8a81477ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d7fc1d037cbb68f8ba2d1c67556871c1496471b0c574109eb9f7c8a81477ca", kill_on_drop: false }`
[INFO] [stdout] 26d7fc1d037cbb68f8ba2d1c67556871c1496471b0c574109eb9f7c8a81477ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 26d0e240fd03b18134fc45239718e49bf70d9a66c1a75372b64ce8d24d850d3b
[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" "26d0e240fd03b18134fc45239718e49bf70d9a66c1a75372b64ce8d24d850d3b", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:160:9
[INFO] [stderr]     |
[INFO] [stderr] 140 | /         loop {
[INFO] [stderr] 141 | |             let n = child_output.read(&mut buf).await?;
[INFO] [stderr] 142 | |             if n <= 0 {
[INFO] [stderr] 143 | |                 continue;
[INFO] [stderr] ...   |
[INFO] [stderr] 158 | |             }
[INFO] [stderr] 159 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 160 |           Ok::<_, eyre::ErrReport>(())
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/twif-c8d708202194d75b
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "26d0e240fd03b18134fc45239718e49bf70d9a66c1a75372b64ce8d24d850d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d0e240fd03b18134fc45239718e49bf70d9a66c1a75372b64ce8d24d850d3b", kill_on_drop: false }`
[INFO] [stdout] 26d0e240fd03b18134fc45239718e49bf70d9a66c1a75372b64ce8d24d850d3b