[INFO] fetching crate rb_tree 0.5.0... [INFO] checking rb_tree-0.5.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] extracting crate rb_tree 0.5.0 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate rb_tree 0.5.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rb_tree 0.5.0 [INFO] finished tweaking crates.io crate rb_tree 0.5.0 [INFO] tweaked toml for crates.io crate rb_tree 0.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate crates.io crate rb_tree 0.5.0 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded syn v1.0.78 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 805a04f116d589a5cd15aed4d0bb926e053e72f7199fe5ee5f666ed995f4b0cc [INFO] running `Command { std: "docker" "start" "-a" "805a04f116d589a5cd15aed4d0bb926e053e72f7199fe5ee5f666ed995f4b0cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "805a04f116d589a5cd15aed4d0bb926e053e72f7199fe5ee5f666ed995f4b0cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "805a04f116d589a5cd15aed4d0bb926e053e72f7199fe5ee5f666ed995f4b0cc", kill_on_drop: false }` [INFO] [stdout] 805a04f116d589a5cd15aed4d0bb926e053e72f7199fe5ee5f666ed995f4b0cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bdb2c1d8e62d3fcf212f3ab3b32ed4c94147dc0ac5d9d50d1693ed6ba72d03f1 [INFO] running `Command { std: "docker" "start" "-a" "bdb2c1d8e62d3fcf212f3ab3b32ed4c94147dc0ac5d9d50d1693ed6ba72d03f1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.103 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling semver v1.0.4 [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling syn v1.0.78 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking plotters-backend v0.3.2 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking half v1.7.1 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking walkdir v2.3.2 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking plotters-svg v0.3.1 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking rb_tree v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Box` is imported redundantly [INFO] [stdout] --> src/node.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::boxed::Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Box` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly [INFO] [stdout] --> src/rbmap.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | use std::iter::{ExactSizeIterator, FromIterator, FusedIterator}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `ExactSizeIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly [INFO] [stdout] --> src/rbtree.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | use std::iter::{ExactSizeIterator, FromIterator, FusedIterator}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `ExactSizeIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly [INFO] [stdout] --> src/rbqueue.rs:9:17 [INFO] [stdout] | [INFO] [stdout] 9 | use std::iter::{ExactSizeIterator, FusedIterator}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `ExactSizeIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell` [INFO] [stdout] --> src/rbmap.rs:921:21 [INFO] [stdout] | [INFO] [stdout] 921 | &mut *(ptr as *mut Mapper) [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] error: aborting due to 1 previous error; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rb_tree` (lib) due to 2 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "bdb2c1d8e62d3fcf212f3ab3b32ed4c94147dc0ac5d9d50d1693ed6ba72d03f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bdb2c1d8e62d3fcf212f3ab3b32ed4c94147dc0ac5d9d50d1693ed6ba72d03f1", kill_on_drop: false }` [INFO] [stdout] bdb2c1d8e62d3fcf212f3ab3b32ed4c94147dc0ac5d9d50d1693ed6ba72d03f1