[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] checking liuyanghejerry/rust-wasm-size-bug against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[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 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4bb840b5554773a4c3532e135a2758bdd20d79100f7922a378f8cd320c23990
[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" "f4bb840b5554773a4c3532e135a2758bdd20d79100f7922a378f8cd320c23990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4bb840b5554773a4c3532e135a2758bdd20d79100f7922a378f8cd320c23990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bb840b5554773a4c3532e135a2758bdd20d79100f7922a378f8cd320c23990", kill_on_drop: false }`
[INFO] [stdout] f4bb840b5554773a4c3532e135a2758bdd20d79100f7922a378f8cd320c23990
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--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] 8c60a38e73f7ca67d4a8ecf43359df46c855f920914e8c4fdfb9460f3b26f461
[INFO] running `Command { std: "docker" "start" "-a" "8c60a38e73f7ca67d4a8ecf43359df46c855f920914e8c4fdfb9460f3b26f461", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking 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] [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 0.42s
[INFO] running `Command { std: "docker" "inspect" "8c60a38e73f7ca67d4a8ecf43359df46c855f920914e8c4fdfb9460f3b26f461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c60a38e73f7ca67d4a8ecf43359df46c855f920914e8c4fdfb9460f3b26f461", kill_on_drop: false }`
[INFO] [stdout] 8c60a38e73f7ca67d4a8ecf43359df46c855f920914e8c4fdfb9460f3b26f461