[INFO] fetching crate plumber-rs 0.1.2...
[INFO] checking plumber-rs-0.1.2 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate plumber-rs 0.1.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate plumber-rs 0.1.2 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plumber-rs 0.1.2
[INFO] finished tweaking crates.io crate plumber-rs 0.1.2
[INFO] tweaked toml for crates.io crate plumber-rs 0.1.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", 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] 1bbc077f52a7dd5d158734a54cc23c8e4ac55cbf4fb552fe38f0adb101c10c1d
[INFO] running `Command { std: "docker" "start" "-a" "1bbc077f52a7dd5d158734a54cc23c8e4ac55cbf4fb552fe38f0adb101c10c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bbc077f52a7dd5d158734a54cc23c8e4ac55cbf4fb552fe38f0adb101c10c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbc077f52a7dd5d158734a54cc23c8e4ac55cbf4fb552fe38f0adb101c10c1d", kill_on_drop: false }`
[INFO] [stdout] 1bbc077f52a7dd5d158734a54cc23c8e4ac55cbf4fb552fe38f0adb101c10c1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0912b37764c8db2d092b3dad1cab87b20ded685cc16deb16b1d2d328f02ab10b
[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" "0912b37764c8db2d092b3dad1cab87b20ded685cc16deb16b1d2d328f02ab10b", kill_on_drop: false }`
[INFO] [stderr]    Compiling plumber-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 255 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_GET_FLAGS, pf_ref as *mut c_void)
[INFO] [stdout]     |                  ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 285 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_SET_FLAG, flag)
[INFO] [stdout]     |                  ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 301 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_CLR_FLAG, flag)
[INFO] [stdout]     |                  ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 337 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_POP_STATE, state_ptr_ref as *const *mut ST)
[INFO] [stdout]     |                  --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 371 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_PUSH_STATE, void_ptr, dispose_func_ptr)
[INFO] [stdout]     |                  ----------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/log.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut data_ptr = &mut data as *mut LogWriteData;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/protocol.rs:308:17
[INFO] [stdout]     |
[INFO] [stdout] 308 |             let mut buf_ptr = &mut buf as *mut T;
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_leak` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_leak)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 255 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_GET_FLAGS, pf_ref as *mut c_void)
[INFO] [stdout]     |                  ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 285 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_SET_FLAG, flag)
[INFO] [stdout]     |                  ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 301 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_CLR_FLAG, flag)
[INFO] [stdout]     |                  ----------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 337 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_POP_STATE, state_ptr_ref as *const *mut ST)
[INFO] [stdout]     |                  --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pipe.rs:92:17
[INFO] [stdout]     |
[INFO] [stdout] 92  |             let mut data_ptr = &mut pipe_cntl_data as *mut PipeCntlData;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 371 |         if -1 != pipe_cntl!(self.pipe, PIPE_CNTL_PUSH_STATE, void_ptr, dispose_func_ptr)
[INFO] [stdout]     |                  ----------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/log.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut data_ptr = &mut data as *mut LogWriteData;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/protocol.rs:308:17
[INFO] [stdout]     |
[INFO] [stdout] 308 |             let mut buf_ptr = &mut buf as *mut T;
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_leak` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_leak)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "0912b37764c8db2d092b3dad1cab87b20ded685cc16deb16b1d2d328f02ab10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0912b37764c8db2d092b3dad1cab87b20ded685cc16deb16b1d2d328f02ab10b", kill_on_drop: false }`
[INFO] [stdout] 0912b37764c8db2d092b3dad1cab87b20ded685cc16deb16b1d2d328f02ab10b
