[INFO] fetching crate libcgroup_rs 0.1.0... [INFO] checking libcgroup_rs-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate libcgroup_rs 0.1.0 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate libcgroup_rs 0.1.0 [INFO] finished tweaking crates.io crate libcgroup_rs 0.1.0 [INFO] tweaked toml for crates.io crate libcgroup_rs 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate libcgroup_rs 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 2 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e6b46b4ae064d80d75d5468bb428c4b64020081bd33876c1574f486c6080f39c [INFO] running `Command { std: "docker" "start" "-a" "e6b46b4ae064d80d75d5468bb428c4b64020081bd33876c1574f486c6080f39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e6b46b4ae064d80d75d5468bb428c4b64020081bd33876c1574f486c6080f39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e6b46b4ae064d80d75d5468bb428c4b64020081bd33876c1574f486c6080f39c", kill_on_drop: false }` [INFO] [stdout] e6b46b4ae064d80d75d5468bb428c4b64020081bd33876c1574f486c6080f39c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 98d3fd83ca990dba18a0e92df9380fb8752befb4f6f3f641c67800aa89245c5f [INFO] running `Command { std: "docker" "start" "-a" "98d3fd83ca990dba18a0e92df9380fb8752befb4f6f3f641c67800aa89245c5f", kill_on_drop: false }` [INFO] [stderr] Compiling libcgroup_rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking log v0.4.27 [INFO] [stdout] warning: fields `name` and `c_groups` are never read [INFO] [stdout] --> src/manipulation.rs:95:5 [INFO] [stdout] | [INFO] [stdout] 94 | pub struct CGroupControllerBuilder{ [INFO] [stdout] | ----------------------- fields in this struct [INFO] [stdout] 95 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 96 | c_groups:*mut cgroup, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CGroupControllerBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/manipulation.rs:569:38 [INFO] [stdout] | [INFO] [stdout] 569 | match Self::new(self.name.clone()) { [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:124:59 [INFO] [stdout] | [INFO] [stdout] 124 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:125:59 [INFO] [stdout] | [INFO] [stdout] 125 | base_path: std::ffi::CString::new(base_path)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:228:59 [INFO] [stdout] | [INFO] [stdout] 228 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:229:59 [INFO] [stdout] | [INFO] [stdout] 229 | path_name: std::ffi::CString::new(path_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:309:55 [INFO] [stdout] | [INFO] [stdout] 309 | cg_name: std::ffi::CString::new(cg_name)?.as_ptr(), [INFO] [stdout] | -------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:310:59 [INFO] [stdout] | [INFO] [stdout] 310 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `c_groups` are never read [INFO] [stdout] --> src/manipulation.rs:95:5 [INFO] [stdout] | [INFO] [stdout] 94 | pub struct CGroupControllerBuilder{ [INFO] [stdout] | ----------------------- fields in this struct [INFO] [stdout] 95 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 96 | c_groups:*mut cgroup, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CGroupControllerBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/manipulation.rs:569:38 [INFO] [stdout] | [INFO] [stdout] 569 | match Self::new(self.name.clone()) { [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:124:59 [INFO] [stdout] | [INFO] [stdout] 124 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:125:59 [INFO] [stdout] | [INFO] [stdout] 125 | base_path: std::ffi::CString::new(base_path)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:228:59 [INFO] [stdout] | [INFO] [stdout] 228 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:229:59 [INFO] [stdout] | [INFO] [stdout] 229 | path_name: std::ffi::CString::new(path_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:309:55 [INFO] [stdout] | [INFO] [stdout] 309 | cg_name: std::ffi::CString::new(cg_name)?.as_ptr(), [INFO] [stdout] | -------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/iterators.rs:310:59 [INFO] [stdout] | [INFO] [stdout] 310 | ctrl_name: std::ffi::CString::new(ctrl_name)?.as_ptr(), [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will immediately 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: 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: you must make sure that the variable you bind the `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s [INFO] running `Command { std: "docker" "inspect" "98d3fd83ca990dba18a0e92df9380fb8752befb4f6f3f641c67800aa89245c5f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "98d3fd83ca990dba18a0e92df9380fb8752befb4f6f3f641c67800aa89245c5f", kill_on_drop: false }` [INFO] [stdout] 98d3fd83ca990dba18a0e92df9380fb8752befb4f6f3f641c67800aa89245c5f