[INFO] cloning repository https://github.com/matklad/wasmer-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/wasmer-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fwasmer-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fwasmer-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30ede831d6bfe0ed714f315e8e075b4523b83999
[INFO] testing matklad/wasmer-repro against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fwasmer-repro" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/wasmer-repro on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking git repo https://github.com/matklad/wasmer-repro
[INFO] finished tweaking git repo https://github.com/matklad/wasmer-repro
[INFO] tweaked toml for git repo https://github.com/matklad/wasmer-repro written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/wasmer-repro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77bda7bc1856f8f87eb48ca4e9180934edf246cb4e32a5423d6da016b2365515
[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" "77bda7bc1856f8f87eb48ca4e9180934edf246cb4e32a5423d6da016b2365515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77bda7bc1856f8f87eb48ca4e9180934edf246cb4e32a5423d6da016b2365515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77bda7bc1856f8f87eb48ca4e9180934edf246cb4e32a5423d6da016b2365515", kill_on_drop: false }`
[INFO] [stdout] 77bda7bc1856f8f87eb48ca4e9180934edf246cb4e32a5423d6da016b2365515
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3868357ed154888af6ff07934645d791d94a26c5e6223c35ac619e9adca19d9
[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" "f3868357ed154888af6ff07934645d791d94a26c5e6223c35ac619e9adca19d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling benchmarks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "f3868357ed154888af6ff07934645d791d94a26c5e6223c35ac619e9adca19d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3868357ed154888af6ff07934645d791d94a26c5e6223c35ac619e9adca19d9", kill_on_drop: false }`
[INFO] [stdout] f3868357ed154888af6ff07934645d791d94a26c5e6223c35ac619e9adca19d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] dc799d3bcb9109c7e05bc5a0034cbfccf8b1f2b19c38cc2cc0af3a58794d5a8a
[INFO] running `Command { std: "docker" "start" "-a" "dc799d3bcb9109c7e05bc5a0034cbfccf8b1f2b19c38cc2cc0af3a58794d5a8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling target-lexicon v0.11.2
[INFO] [stderr]    Compiling more-asserts v0.2.1
[INFO] [stderr]    Compiling wasmparser v0.65.0
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling wasmer-vm v1.0.2
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling memmap2 v0.2.2
[INFO] [stderr]    Compiling which v4.1.0
[INFO] [stderr]    Compiling backtrace v0.3.56
[INFO] [stderr]    Compiling wast v35.0.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling wat v1.0.37
[INFO] [stderr]    Compiling darling_core v0.12.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling dynasm v1.0.1
[INFO] [stderr]    Compiling wasmer-derive v1.0.2
[INFO] [stderr]    Compiling darling_macro v0.12.3
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling tracing v0.1.25
[INFO] [stderr]    Compiling darling v0.12.3
[INFO] [stderr]    Compiling enumset_derive v0.5.4
[INFO] [stderr]    Compiling enumset v1.0.6
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling dynasmrt v1.0.1
[INFO] [stderr]    Compiling cranelift-entity v0.68.0
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling bincode v1.3.2
[INFO] [stderr]    Compiling wasmer-types v1.0.2
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling wasmer-compiler v1.0.2
[INFO] [stderr]    Compiling wasmer-engine v1.0.2
[INFO] [stderr]    Compiling wasmer-object v1.0.2
[INFO] [stderr]    Compiling wasmer-compiler-singlepass v1.0.2
[INFO] [stderr]    Compiling wasmer-engine-jit v1.0.2
[INFO] [stderr]    Compiling wasmer-engine-native v1.0.2
[INFO] [stderr]    Compiling wasmer v1.0.2
[INFO] [stderr]    Compiling benchmarks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `xs`
[INFO] [stdout]   --> examples/bench.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let xs = vec![92; 1024 * 1024 * 100];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_xs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> examples/bench.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn eat_stack(lvl: u32) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 40 |     eat_stack(lvl.wrapping_add(1))
[INFO] [stdout]    |     ------------------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc799d3bcb9109c7e05bc5a0034cbfccf8b1f2b19c38cc2cc0af3a58794d5a8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc799d3bcb9109c7e05bc5a0034cbfccf8b1f2b19c38cc2cc0af3a58794d5a8a", kill_on_drop: false }`
[INFO] [stdout] dc799d3bcb9109c7e05bc5a0034cbfccf8b1f2b19c38cc2cc0af3a58794d5a8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] ae0b109e3f084193d194ef50b72af3e6b4fcc6f3443a3b0895abb4e20d8817f2
[INFO] running `Command { std: "docker" "start" "-a" "ae0b109e3f084193d194ef50b72af3e6b4fcc6f3443a3b0895abb4e20d8817f2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `xs`
[INFO] [stderr]   --> examples/bench.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let xs = vec![92; 1024 * 1024 * 100];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_xs`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> examples/bench.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn eat_stack(lvl: u32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 40 |     eat_stack(lvl.wrapping_add(1))
[INFO] [stderr]    |     ------------------------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: `benchmarks` (example "bench") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 31.76s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/benchmarks-be20a3afe61231ae)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests benchmarks
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ae0b109e3f084193d194ef50b72af3e6b4fcc6f3443a3b0895abb4e20d8817f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0b109e3f084193d194ef50b72af3e6b4fcc6f3443a3b0895abb4e20d8817f2", kill_on_drop: false }`
[INFO] [stdout] ae0b109e3f084193d194ef50b72af3e6b4fcc6f3443a3b0895abb4e20d8817f2