[INFO] cloning repository https://github.com/liuyanghejerry/rust-wasm-size-bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liuyanghejerry/rust-wasm-size-bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuyanghejerry%2Frust-wasm-size-bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuyanghejerry%2Frust-wasm-size-bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f77930eea9150e3c1aace45ba838b201e6af730
[INFO] testing liuyanghejerry/rust-wasm-size-bug against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuyanghejerry%2Frust-wasm-size-bug" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liuyanghejerry/rust-wasm-size-bug 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/liuyanghejerry/rust-wasm-size-bug
[INFO] finished tweaking git repo https://github.com/liuyanghejerry/rust-wasm-size-bug
[INFO] tweaked toml for git repo https://github.com/liuyanghejerry/rust-wasm-size-bug written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/liuyanghejerry/rust-wasm-size-bug 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c201d00dc5b2557272a3047b7b2391cf6bea403308af7b67b1640e197374aa9e
[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" "c201d00dc5b2557272a3047b7b2391cf6bea403308af7b67b1640e197374aa9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c201d00dc5b2557272a3047b7b2391cf6bea403308af7b67b1640e197374aa9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c201d00dc5b2557272a3047b7b2391cf6bea403308af7b67b1640e197374aa9e", kill_on_drop: false }`
[INFO] [stdout] c201d00dc5b2557272a3047b7b2391cf6bea403308af7b67b1640e197374aa9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a991f5ef46a864def8bf1b232fe7a0ba864ee27a88062e2868483d6b9f3019d
[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" "0a991f5ef46a864def8bf1b232fe7a0ba864ee27a88062e2868483d6b9f3019d", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-size-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let buf : &[u8] = std::slice::from_raw_parts(ptr, length as usize);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 1.05s
[INFO] running `Command { std: "docker" "inspect" "0a991f5ef46a864def8bf1b232fe7a0ba864ee27a88062e2868483d6b9f3019d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a991f5ef46a864def8bf1b232fe7a0ba864ee27a88062e2868483d6b9f3019d", kill_on_drop: false }`
[INFO] [stdout] 0a991f5ef46a864def8bf1b232fe7a0ba864ee27a88062e2868483d6b9f3019d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] cff64375fded57ece5d2014e725fb22d3fbf01fa692436cf7de28bceb2824144
[INFO] running `Command { std: "docker" "start" "-a" "cff64375fded57ece5d2014e725fb22d3fbf01fa692436cf7de28bceb2824144", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-size-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let buf : &[u8] = std::slice::from_raw_parts(ptr, length as usize);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 0.71s
[INFO] running `Command { std: "docker" "inspect" "cff64375fded57ece5d2014e725fb22d3fbf01fa692436cf7de28bceb2824144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff64375fded57ece5d2014e725fb22d3fbf01fa692436cf7de28bceb2824144", kill_on_drop: false }`
[INFO] [stdout] cff64375fded57ece5d2014e725fb22d3fbf01fa692436cf7de28bceb2824144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c953e6cb0e89fc3a9b02ec77b957a5e4b207f45a1adf81d380190d273aa63d9
[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" "9c953e6cb0e89fc3a9b02ec77b957a5e4b207f45a1adf81d380190d273aa63d9", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let buf : &[u8] = std::slice::from_raw_parts(ptr, length as usize);
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[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] [stderr]      Running /opt/rustwide/target/debug/deps/wasm_size_bug-bcec22631e30678c
[INFO] running `Command { std: "docker" "inspect" "9c953e6cb0e89fc3a9b02ec77b957a5e4b207f45a1adf81d380190d273aa63d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c953e6cb0e89fc3a9b02ec77b957a5e4b207f45a1adf81d380190d273aa63d9", kill_on_drop: false }`
[INFO] [stdout] 9c953e6cb0e89fc3a9b02ec77b957a5e4b207f45a1adf81d380190d273aa63d9