[INFO] fetching crate toolshed 0.8.1... [INFO] testing toolshed-0.8.1 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1 [INFO] extracting crate toolshed 0.8.1 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate toolshed 0.8.1 [INFO] finished tweaking crates.io crate toolshed 0.8.1 [INFO] tweaked toml for crates.io crate toolshed 0.8.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate toolshed 0.8.1 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 12 packages to latest compatible versions [INFO] [stderr] Adding rustc-hash v1.1.0 (available: v2.1.1) [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] 0e8e15b0a665ce68aab7a6c43a26d13ff379a73166b9ea51e531358fd090e25e [INFO] running `Command { std: "docker" "start" "-a" "0e8e15b0a665ce68aab7a6c43a26d13ff379a73166b9ea51e531358fd090e25e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0e8e15b0a665ce68aab7a6c43a26d13ff379a73166b9ea51e531358fd090e25e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e8e15b0a665ce68aab7a6c43a26d13ff379a73166b9ea51e531358fd090e25e", kill_on_drop: false }` [INFO] [stdout] 0e8e15b0a665ce68aab7a6c43a26d13ff379a73166b9ea51e531358fd090e25e [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] 8504cd4bec21d9df37514e1bbf5d15e923ce44b739653540bab4e6cdbd896ea4 [INFO] running `Command { std: "docker" "start" "-a" "8504cd4bec21d9df37514e1bbf5d15e923ce44b739653540bab4e6cdbd896ea4", kill_on_drop: false }` [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling toolshed v0.8.1 (/opt/rustwide/workdir) [INFO] [stdout] error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` [INFO] [stdout] --> src/cell.rs:56:18 [INFO] [stdout] | [INFO] [stdout] 56 | unsafe { write_volatile(self as *const CopyCell as *const T as *mut T, value) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] = note: even for types with interior mutability, the only legal way to obtain a mutable pointer from a shared reference is through `UnsafeCell::get` [INFO] [stdout] = note: `#[deny(invalid_reference_casting)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/arena.rs:266:67 [INFO] [stdout] | [INFO] [stdout] 266 | pub fn alloc_nul_term_str<'arena>(&'arena self, val: &str) -> NulTermStr { [INFO] [stdout] | ------ ^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: consistently use `'arena` [INFO] [stdout] | [INFO] [stdout] 266 | pub fn alloc_nul_term_str<'arena>(&'arena self, val: &str) -> NulTermStr<'arena> { [INFO] [stdout] | ++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `toolshed` (lib) due to 1 previous error; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "8504cd4bec21d9df37514e1bbf5d15e923ce44b739653540bab4e6cdbd896ea4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8504cd4bec21d9df37514e1bbf5d15e923ce44b739653540bab4e6cdbd896ea4", kill_on_drop: false }` [INFO] [stdout] 8504cd4bec21d9df37514e1bbf5d15e923ce44b739653540bab4e6cdbd896ea4