[INFO] fetching crate imm_gc 0.2.1...
[INFO] testing imm_gc-0.2.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate imm_gc 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate imm_gc 0.2.1
[INFO] finished tweaking crates.io crate imm_gc 0.2.1
[INFO] tweaked toml for crates.io crate imm_gc 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate imm_gc 0.2.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded imm_gc_derive v0.2.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9671f307b8011396518f4562f2d255006d77ae35244a65c324e55b380b500d5
[INFO] running `Command { std: "docker" "start" "-a" "f9671f307b8011396518f4562f2d255006d77ae35244a65c324e55b380b500d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9671f307b8011396518f4562f2d255006d77ae35244a65c324e55b380b500d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9671f307b8011396518f4562f2d255006d77ae35244a65c324e55b380b500d5", kill_on_drop: false }`
[INFO] [stdout] f9671f307b8011396518f4562f2d255006d77ae35244a65c324e55b380b500d5
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9a5ef691874f5407f884da835cff4c247d24e9744b27d096cfca7e0947d210f
[INFO] running `Command { std: "docker" "start" "-a" "c9a5ef691874f5407f884da835cff4c247d24e9744b27d096cfca7e0947d210f", kill_on_drop: false }`
[INFO] [stderr]    Compiling imm_gc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:101:23
[INFO] [stdout]     |
[INFO] [stdout] 101 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 102 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 103 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 104 | |                 done: Cell::new(false),
[INFO] [stdout] 105 | |                 dropped: Cell::new(false),
[INFO] [stdout] 106 | |                 value: MaybeUninit::new(value),
[INFO] [stdout] 107 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 101 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 102 |                 ref_count: Cell::new(1),
[INFO] [stdout] ...
[INFO] [stdout] 106 |                 value: MaybeUninit::new(value),
[INFO] [stdout] 107 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:154:23
[INFO] [stdout]     |
[INFO] [stdout] 154 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 155 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 156 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 157 | |                 done: Cell::new(false),
[INFO] [stdout] 158 | |                 dropped: Cell::new(true),
[INFO] [stdout] 159 | |                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 160 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 154 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 155 |                 ref_count: Cell::new(1),
[INFO] [stdout] ...
[INFO] [stdout] 159 |                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 160 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cell_update, maybe_uninit_extra, box_syntax, allocator_api)]
[INFO] [stdout]   |                                             ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cell_update, maybe_uninit_extra, box_syntax, allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `cell_update` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cell_update, maybe_uninit_extra, box_syntax, allocator_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cell_update, maybe_uninit_extra, box_syntax, allocator_api)]
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Box::leak(box GcInner {
[INFO] [stdout]     |             ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Box`
[INFO] [stdout] ...
[INFO] [stdout] 108 |             .into(),
[INFO] [stdout]     |              ---- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Box::<T, A>::leak(box GcInner {
[INFO] [stdout]     |                ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |             Box::leak(box GcInner {
[INFO] [stdout]     |             ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Box`
[INFO] [stdout] ...
[INFO] [stdout] 161 |             .into(),
[INFO] [stdout]     |              ---- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 154 |             Box::<T, A>::leak(box GcInner {
[INFO] [stdout]     |                ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imm_gc` (lib) due to 6 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c9a5ef691874f5407f884da835cff4c247d24e9744b27d096cfca7e0947d210f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9a5ef691874f5407f884da835cff4c247d24e9744b27d096cfca7e0947d210f", kill_on_drop: false }`
[INFO] [stdout] c9a5ef691874f5407f884da835cff4c247d24e9744b27d096cfca7e0947d210f
