[INFO] cloning repository https://github.com/totechite/rust-snappy-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/totechite/rust-snappy-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Frust-snappy-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Frust-snappy-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70f145567badc99eb6fd67dbfb3765d4fcdcba05
[INFO] testing totechite/rust-snappy-example against 1.86.0 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Frust-snappy-example" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/totechite/rust-snappy-example on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/totechite/rust-snappy-example
[INFO] finished tweaking git repo https://github.com/totechite/rust-snappy-example
[INFO] tweaked toml for git repo https://github.com/totechite/rust-snappy-example written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/totechite/rust-snappy-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9079381d5e7123f4346ea77e92b04f594f534035ac2c56c5813ed078afea6dcf
[INFO] running `Command { std: "docker" "start" "-a" "9079381d5e7123f4346ea77e92b04f594f534035ac2c56c5813ed078afea6dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9079381d5e7123f4346ea77e92b04f594f534035ac2c56c5813ed078afea6dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9079381d5e7123f4346ea77e92b04f594f534035ac2c56c5813ed078afea6dcf", kill_on_drop: false }`
[INFO] [stdout] 9079381d5e7123f4346ea77e92b04f594f534035ac2c56c5813ed078afea6dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ef756128bc23f3f10eec1155a03af936643b7f320413cf5ab7c6ac4503d45f3
[INFO] running `Command { std: "docker" "start" "-a" "4ef756128bc23f3f10eec1155a03af936643b7f320413cf5ab7c6ac4503d45f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling practice_rust_ffi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/bind_snappy.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn compress(src: &[u8]) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uncompress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn uncompress(src: &[u8]) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_compressed_buffer` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn validate_compressed_buffer(src: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_compress` is never used
[INFO] [stdout]  --> src/bind_snappy.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn snappy_compress(input: *const u8,
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_uncompress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn snappy_uncompress(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_uncompressed_length` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn snappy_uncompressed_length(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_validate_compressed_buffer` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn snappy_validate_compressed_buffer(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "4ef756128bc23f3f10eec1155a03af936643b7f320413cf5ab7c6ac4503d45f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef756128bc23f3f10eec1155a03af936643b7f320413cf5ab7c6ac4503d45f3", kill_on_drop: false }`
[INFO] [stdout] 4ef756128bc23f3f10eec1155a03af936643b7f320413cf5ab7c6ac4503d45f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 328d8e51d1dde4ed9377b7f97f04e936d6e3752ba29600d15bf84e9312a93fe3
[INFO] running `Command { std: "docker" "start" "-a" "328d8e51d1dde4ed9377b7f97f04e936d6e3752ba29600d15bf84e9312a93fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling practice_rust_ffi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/bind_snappy.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn compress(src: &[u8]) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uncompress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn uncompress(src: &[u8]) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_compressed_buffer` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn validate_compressed_buffer(src: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_compress` is never used
[INFO] [stdout]  --> src/bind_snappy.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn snappy_compress(input: *const u8,
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_uncompress` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn snappy_uncompress(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_uncompressed_length` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn snappy_uncompressed_length(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snappy_validate_compressed_buffer` is never used
[INFO] [stdout]   --> src/bind_snappy.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn snappy_validate_compressed_buffer(compressed: *const u8,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "328d8e51d1dde4ed9377b7f97f04e936d6e3752ba29600d15bf84e9312a93fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "328d8e51d1dde4ed9377b7f97f04e936d6e3752ba29600d15bf84e9312a93fe3", kill_on_drop: false }`
[INFO] [stdout] 328d8e51d1dde4ed9377b7f97f04e936d6e3752ba29600d15bf84e9312a93fe3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c3ac68137688747bf135c6378e1c2cdaf65752632625ed13f369f7c872b32f07
[INFO] running `Command { std: "docker" "start" "-a" "c3ac68137688747bf135c6378e1c2cdaf65752632625ed13f369f7c872b32f07", kill_on_drop: false }`
[INFO] [stderr] warning: extern declarations without an explicit ABI are deprecated
[INFO] [stderr]  --> src/bind_snappy.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern {
[INFO] [stderr]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `compress` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn compress(src: &[u8]) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `uncompress` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn uncompress(src: &[u8]) -> Option<Vec<u8>> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `validate_compressed_buffer` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn validate_compressed_buffer(src: &[u8]) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `snappy_compress` is never used
[INFO] [stderr]  --> src/bind_snappy.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn snappy_compress(input: *const u8,
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `snappy_uncompress` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn snappy_uncompress(compressed: *const u8,
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `snappy_uncompressed_length` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn snappy_uncompressed_length(compressed: *const u8,
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `snappy_validate_compressed_buffer` is never used
[INFO] [stderr]   --> src/bind_snappy.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn snappy_validate_compressed_buffer(compressed: *const u8,
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `practice_rust_ffi` (bin "practice_rust_ffi" test) generated 8 warnings (run `cargo fix --bin "practice_rust_ffi" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/practice_rust_ffi-829b936715f90d35)
[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" "c3ac68137688747bf135c6378e1c2cdaf65752632625ed13f369f7c872b32f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ac68137688747bf135c6378e1c2cdaf65752632625ed13f369f7c872b32f07", kill_on_drop: false }`
[INFO] [stdout] c3ac68137688747bf135c6378e1c2cdaf65752632625ed13f369f7c872b32f07