[INFO] fetching crate rcc4r 0.1.0...
[INFO] testing rcc4r-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate rcc4r 0.1.0 into /workspace/builds/worker-0-tc1/source
[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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rcc4r 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rcc4r 0.1.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.74
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fc7a4967de26f54e3f137665801d0a652748f8c85003b63adf03dab72e64b33
[INFO] running `Command { std: "docker" "start" "-a" "7fc7a4967de26f54e3f137665801d0a652748f8c85003b63adf03dab72e64b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fc7a4967de26f54e3f137665801d0a652748f8c85003b63adf03dab72e64b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc7a4967de26f54e3f137665801d0a652748f8c85003b63adf03dab72e64b33", kill_on_drop: false }`
[INFO] [stdout] 7fc7a4967de26f54e3f137665801d0a652748f8c85003b63adf03dab72e64b33
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] add6cc7b5ed6631f1b6b15670eba02101bdddd26c72d98b81c5d586baf4a6d10
[INFO] running `Command { std: "docker" "start" "-a" "add6cc7b5ed6631f1b6b15670eba02101bdddd26c72d98b81c5d586baf4a6d10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling rcc4r v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `ptr_wrapping_offset_from`
[INFO] [stdout]  --> src/main.rs:2:12
[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]     |                                                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `wrapping_offset` with a similar name
[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] 137 +                 printf(b"%d: %.*s\x00" as *const u8 as *const c_char, line, p.wrapping_offset(lp) as ssize_t, lp);
[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:164:41
[INFO] [stdout]     |
[INFO] [stdout] 164 |             tk = (tk << 6 as c_int) + p.wrapping_offset_from(pp) as ssize_t;
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `wrapping_offset` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 164 -             tk = (tk << 6 as c_int) + p.wrapping_offset_from(pp) as ssize_t;
[INFO] [stdout] 164 +             tk = (tk << 6 as c_int) + p.wrapping_offset(pp) as ssize_t;
[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:167:148
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... as *mut c_char as *const c_void, pp as *const c_void, p.wrapping_offset_from(pp) as ssize_t as size_t) == 0 {
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `wrapping_offset` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 167 -                 if tk == *id.offset(Hash as ssize_t) && memcmp(*id.offset(Name as ssize_t) as *mut c_char as *const c_void, pp as *const c_void, p.wrapping_offset_from(pp) as ssize_t as size_t) == 0 {
[INFO] [stdout] 167 +                 if tk == *id.offset(Hash as ssize_t) && memcmp(*id.offset(Name as ssize_t) as *mut c_char as *const c_void, pp as *const c_void, p.wrapping_offset(pp) as ssize_t as size_t) == 0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcc4r` (bin "rcc4r") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "add6cc7b5ed6631f1b6b15670eba02101bdddd26c72d98b81c5d586baf4a6d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "add6cc7b5ed6631f1b6b15670eba02101bdddd26c72d98b81c5d586baf4a6d10", kill_on_drop: false }`
[INFO] [stdout] add6cc7b5ed6631f1b6b15670eba02101bdddd26c72d98b81c5d586baf4a6d10