[INFO] fetching crate ra-ap-rustc_serialize 0.80.0...
[INFO] testing ra-ap-rustc_serialize-0.80.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate ra-ap-rustc_serialize 0.80.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ra-ap-rustc_serialize 0.80.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ra-ap-rustc_serialize 0.80.0
[INFO] tweaked toml for crates.io crate ra-ap-rustc_serialize 0.80.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ra-ap-rustc_serialize 0.80.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e536514bbfa70f88aa5d76d5f2dd586c844d64ca010bb156048b2752a725023
[INFO] running `Command { std: "docker" "start" "-a" "5e536514bbfa70f88aa5d76d5f2dd586c844d64ca010bb156048b2752a725023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e536514bbfa70f88aa5d76d5f2dd586c844d64ca010bb156048b2752a725023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e536514bbfa70f88aa5d76d5f2dd586c844d64ca010bb156048b2752a725023", kill_on_drop: false }`
[INFO] [stdout] 5e536514bbfa70f88aa5d76d5f2dd586c844d64ca010bb156048b2752a725023
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 909ca173d2edb7833f227c65954f0d640b515e8635c774574133d246318d9a63
[INFO] running `Command { std: "docker" "start" "-a" "909ca173d2edb7833f227c65954f0d640b515e8635c774574133d246318d9a63", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling ra-ap-rustc_serialize v0.80.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `ptr_sub_ptr` has been stable since 1.87.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(ptr_sub_ptr)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `sub_ptr` found for raw pointer `*const u8` in the current scope
[INFO] [stdout]    --> src/opaque.rs:283:27
[INFO] [stdout]     |
[INFO] [stdout] 283 |         unsafe { self.end.sub_ptr(self.start) }
[INFO] [stdout]     |                           ^^^^^^^ method not found in `*const u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `sub_ptr` found for raw pointer `*const u8` in the current scope
[INFO] [stdout]    --> src/opaque.rs:289:27
[INFO] [stdout]     |
[INFO] [stdout] 289 |         unsafe { self.end.sub_ptr(self.current) }
[INFO] [stdout]     |                           ^^^^^^^ method not found in `*const u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `sub_ptr` found for raw pointer `*const u8` in the current scope
[INFO] [stdout]    --> src/opaque.rs:403:31
[INFO] [stdout]     |
[INFO] [stdout] 403 |         unsafe { self.current.sub_ptr(self.start) }
[INFO] [stdout]     |                               ^^^^^^^ method not found in `*const u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ra-ap-rustc_serialize` (lib) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "909ca173d2edb7833f227c65954f0d640b515e8635c774574133d246318d9a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909ca173d2edb7833f227c65954f0d640b515e8635c774574133d246318d9a63", kill_on_drop: false }`
[INFO] [stdout] 909ca173d2edb7833f227c65954f0d640b515e8635c774574133d246318d9a63