[INFO] fetching crate rcc4r 0.1.0...
[INFO] checking rcc4r-0.1.0 against beta for pr-78714
[INFO] extracting crate rcc4r 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rcc4r 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcc4r 0.1.0
[INFO] finished tweaking crates.io crate rcc4r 0.1.0
[INFO] tweaked toml for crates.io crate rcc4r 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate rcc4r 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d13b35fed0be2f4f8c9bc51f3a4bf63cbb7a518c8ac948a6a8c2a1b3f633cc10
[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" "d13b35fed0be2f4f8c9bc51f3a4bf63cbb7a518c8ac948a6a8c2a1b3f633cc10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d13b35fed0be2f4f8c9bc51f3a4bf63cbb7a518c8ac948a6a8c2a1b3f633cc10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13b35fed0be2f4f8c9bc51f3a4bf63cbb7a518c8ac948a6a8c2a1b3f633cc10", kill_on_drop: false }`
[INFO] [stdout] d13b35fed0be2f4f8c9bc51f3a4bf63cbb7a518c8ac948a6a8c2a1b3f633cc10
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0de69a89cb62ab960504db34c4ec2dd1c213e1185dac70a61d37c7c2626b60d3
[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" "0de69a89cb62ab960504db34c4ec2dd1c213e1185dac70a61d37c7c2626b60d3", kill_on_drop: false }`
[INFO] [stderr]     Checking rcc4r v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ptr_wrapping_offset_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ptr_wrapping_offset_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:137:79
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 printf(b"%d: %.*s\x00" as *const u8 as *const c_char, line, p.wrapping_offset_from(lp) as ssize_t, lp);
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:137:79
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 printf(b"%d: %.*s\x00" as *const u8 as *const c_char, line, p.wrapping_offset_from(lp) as ssize_t, lp);
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:164:41
[INFO] [stdout]     |
[INFO] [stdout] 164 |             tk = (tk << 6 as c_int) + p.wrapping_offset_from(pp) as ssize_t;
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:167:148
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... *const c_void, p.wrapping_offset_from(pp) as ssize_t as size_t) == 0 {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:164:41
[INFO] [stdout]     |
[INFO] [stdout] 164 |             tk = (tk << 6 as c_int) + p.wrapping_offset_from(pp) as ssize_t;
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut i8` in the current scope
[INFO] [stdout]    --> src/main.rs:167:148
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... *const c_void, p.wrapping_offset_from(pp) as ssize_t as size_t) == 0 {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]     = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcc4r`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0de69a89cb62ab960504db34c4ec2dd1c213e1185dac70a61d37c7c2626b60d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0de69a89cb62ab960504db34c4ec2dd1c213e1185dac70a61d37c7c2626b60d3", kill_on_drop: false }`
[INFO] [stdout] 0de69a89cb62ab960504db34c4ec2dd1c213e1185dac70a61d37c7c2626b60d3