[INFO] fetching crate namespaces-rs 0.1.1... [INFO] checking namespaces-rs-0.1.1 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073 [INFO] extracting crate namespaces-rs 0.1.1 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate namespaces-rs 0.1.1 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate namespaces-rs 0.1.1 [INFO] finished tweaking crates.io crate namespaces-rs 0.1.1 [INFO] tweaked toml for crates.io crate namespaces-rs 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded anyhow v1.0.34 [INFO] [stderr] Downloaded nix v0.18.0 [INFO] [stderr] Downloaded uuid v0.8.1 [INFO] [stderr] Downloaded ipc-channel v0.14.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ba6bde065d38c68ac1e706792a12a784fc00137db1229df9c853ba28b39556c3 [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" "ba6bde065d38c68ac1e706792a12a784fc00137db1229df9c853ba28b39556c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ba6bde065d38c68ac1e706792a12a784fc00137db1229df9c853ba28b39556c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba6bde065d38c68ac1e706792a12a784fc00137db1229df9c853ba28b39556c3", kill_on_drop: false }` [INFO] [stdout] ba6bde065d38c68ac1e706792a12a784fc00137db1229df9c853ba28b39556c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a6e83a82d11be22623ac2a842163112d1727a5e99d5836045b0f58f06045a73f [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" "a6e83a82d11be22623ac2a842163112d1727a5e99d5836045b0f58f06045a73f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Checking crossbeam-channel v0.4.4 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking nix v0.18.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking bincode v1.3.1 [INFO] [stderr] Checking uuid v0.8.1 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking ipc-channel v0.14.1 [INFO] [stderr] Checking namespaces-rs v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/advanced.rs:15:41 [INFO] [stdout] | [INFO] [stdout] 15 | Ok(unistd::ForkResult::Parent { child, .. }) => { [INFO] [stdout] | ^^^^^ help: try ignoring the field: `child: _` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/advanced.rs:43:41 [INFO] [stdout] | [INFO] [stdout] 43 | Ok(unistd::ForkResult::Parent { child, .. }) => { [INFO] [stdout] | ^^^^^ help: try ignoring the field: `child: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/advanced.rs:15:41 [INFO] [stdout] | [INFO] [stdout] 15 | Ok(unistd::ForkResult::Parent { child, .. }) => { [INFO] [stdout] | ^^^^^ help: try ignoring the field: `child: _` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/advanced.rs:43:41 [INFO] [stdout] | [INFO] [stdout] 43 | Ok(unistd::ForkResult::Parent { child, .. }) => { [INFO] [stdout] | ^^^^^ help: try ignoring the field: `child: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: getting the inner pointer of a temporary `CString` [INFO] [stdout] --> src/basic.rs:38:65 [INFO] [stdout] | [INFO] [stdout] 38 | std::ffi::CString::new(i.as_str()).unwrap().as_ptr() as *const libc::c_char, [INFO] [stdout] | ------------------------------------------- ^^^^^^ this pointer will be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(temporary_cstring_as_ptr)]` on by default [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: for more information, see https://doc.rust-lang.org/reference/destructors.html [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: getting the inner pointer of a temporary `CString` [INFO] [stdout] --> src/basic.rs:38:65 [INFO] [stdout] | [INFO] [stdout] 38 | std::ffi::CString::new(i.as_str()).unwrap().as_ptr() as *const libc::c_char, [INFO] [stdout] | ------------------------------------------- ^^^^^^ this pointer will be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(temporary_cstring_as_ptr)]` on by default [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: for more information, see https://doc.rust-lang.org/reference/destructors.html [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/advanced.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | tx.send(f()); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/advanced.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | tx.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/advanced.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | tx.send(f()); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/advanced.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | tx.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 23.22s [INFO] running `Command { std: "docker" "inspect" "a6e83a82d11be22623ac2a842163112d1727a5e99d5836045b0f58f06045a73f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a6e83a82d11be22623ac2a842163112d1727a5e99d5836045b0f58f06045a73f", kill_on_drop: false }` [INFO] [stdout] a6e83a82d11be22623ac2a842163112d1727a5e99d5836045b0f58f06045a73f