[INFO] fetching crate async_cell 0.2.3...
[INFO] testing async_cell-0.2.3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate async_cell 0.2.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate async_cell 0.2.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate async_cell 0.2.3
[INFO] tweaked toml for crates.io crate async_cell 0.2.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate async_cell 0.2.3 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate async_cell 0.2.3 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-collections v0.2.0
[INFO] [stderr]   Downloaded weakref v0.2.0
[INFO] [stderr]   Downloaded generator v0.8.5
[INFO] [stderr]   Downloaded windows-numerics v0.2.0
[INFO] [stderr]   Downloaded windows-threading v0.1.0
[INFO] [stderr]   Downloaded fixedbitset v0.4.2
[INFO] [stderr]   Downloaded redox_syscall v0.5.13
[INFO] [stderr]   Downloaded cc v1.2.29
[INFO] [stderr]   Downloaded loom v0.7.2
[INFO] [stderr]   Downloaded thread-id v4.2.2
[INFO] [stderr]   Downloaded windows-future v0.2.1
[INFO] [stderr]   Downloaded petgraph v0.6.5
[INFO] [stderr]   Downloaded windows v0.61.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ef78b1527dc705756572153dee89496bc61dccee5693cce361525df81bf682f
[INFO] running `Command { std: "docker" "start" "-a" "3ef78b1527dc705756572153dee89496bc61dccee5693cce361525df81bf682f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ef78b1527dc705756572153dee89496bc61dccee5693cce361525df81bf682f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef78b1527dc705756572153dee89496bc61dccee5693cce361525df81bf682f", kill_on_drop: false }`
[INFO] [stdout] 3ef78b1527dc705756572153dee89496bc61dccee5693cce361525df81bf682f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14fff891638b92e60f8e5ac632cbb177528ebc2cd69bd5c2e8afe5fce8fdaab0
[INFO] running `Command { std: "docker" "start" "-a" "14fff891638b92e60f8e5ac632cbb177528ebc2cd69bd5c2e8afe5fce8fdaab0", kill_on_drop: false }`
[INFO] [stderr]    Compiling async_cell v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "14fff891638b92e60f8e5ac632cbb177528ebc2cd69bd5c2e8afe5fce8fdaab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14fff891638b92e60f8e5ac632cbb177528ebc2cd69bd5c2e8afe5fce8fdaab0", kill_on_drop: false }`
[INFO] [stdout] 14fff891638b92e60f8e5ac632cbb177528ebc2cd69bd5c2e8afe5fce8fdaab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6d3896d4dd4e12763f6eb97d71b520d3969cd59b875947e8b31f9643ac6a33e
[INFO] running `Command { std: "docker" "start" "-a" "c6d3896d4dd4e12763f6eb97d71b520d3969cd59b875947e8b31f9643ac6a33e", kill_on_drop: false }`
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async_cell v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/cell.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use loom::thread::yield_now;
[INFO] [stdout]   |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/utils.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LoomWaker(loom::sync::Notify);
[INFO] [stdout]   |                  ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:25:37
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let notify = Arc::new(LoomWaker(loom::sync::Notify::new()));
[INFO] [stdout]    |                                     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     loom::thread::spawn(|| block_on(future));
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  3 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 20 -     loom::thread::spawn(|| block_on(future));
[INFO] [stdout] 20 +     thread::spawn(|| block_on(future));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/utils.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LoomWaker(loom::sync::Notify);
[INFO] [stdout]   |                  ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:25:37
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let notify = Arc::new(LoomWaker(loom::sync::Notify::new()));
[INFO] [stdout]    |                                     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     loom::model(move || {
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     loom::thread::spawn(|| block_on(future));
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  3 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 20 -     loom::thread::spawn(|| block_on(future));
[INFO] [stdout] 20 +     thread::spawn(|| block_on(future));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     loom::model(move || {
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async_cell` (test "utils") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async_cell` (test "cell") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "c6d3896d4dd4e12763f6eb97d71b520d3969cd59b875947e8b31f9643ac6a33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6d3896d4dd4e12763f6eb97d71b520d3969cd59b875947e8b31f9643ac6a33e", kill_on_drop: false }`
[INFO] [stdout] c6d3896d4dd4e12763f6eb97d71b520d3969cd59b875947e8b31f9643ac6a33e