[INFO] fetching crate mergable 0.19.0...
[INFO] testing mergable-0.19.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate mergable 0.19.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate mergable 0.19.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mergable 0.19.0
[INFO] finished tweaking crates.io crate mergable 0.19.0
[INFO] tweaked toml for crates.io crate mergable 0.19.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cde5c3e0e49789054e0a75dfc53660d66bffdbac92f8c0bb5d37ce54ed919a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2cde5c3e0e49789054e0a75dfc53660d66bffdbac92f8c0bb5d37ce54ed919a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cde5c3e0e49789054e0a75dfc53660d66bffdbac92f8c0bb5d37ce54ed919a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cde5c3e0e49789054e0a75dfc53660d66bffdbac92f8c0bb5d37ce54ed919a0", kill_on_drop: false }`
[INFO] [stdout] 2cde5c3e0e49789054e0a75dfc53660d66bffdbac92f8c0bb5d37ce54ed919a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 146ecb0c141b952435020ad3905608cba3618e040011357b3275bdf72223810d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "146ecb0c141b952435020ad3905608cba3618e040011357b3275bdf72223810d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mergable v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "146ecb0c141b952435020ad3905608cba3618e040011357b3275bdf72223810d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "146ecb0c141b952435020ad3905608cba3618e040011357b3275bdf72223810d", kill_on_drop: false }`
[INFO] [stdout] 146ecb0c141b952435020ad3905608cba3618e040011357b3275bdf72223810d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aee841770139e2e6263fbec0c6a83d2ddae6191e0aef04bc051c349ac10a8a4d
[INFO] running `Command { std: "docker" "start" "-a" "aee841770139e2e6263fbec0c6a83d2ddae6191e0aef04bc051c349ac10a8a4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mergable v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "aee841770139e2e6263fbec0c6a83d2ddae6191e0aef04bc051c349ac10a8a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aee841770139e2e6263fbec0c6a83d2ddae6191e0aef04bc051c349ac10a8a4d", kill_on_drop: false }`
[INFO] [stdout] aee841770139e2e6263fbec0c6a83d2ddae6191e0aef04bc051c349ac10a8a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d658eae1231229292600a005916b2643da5947acf06c18202090f4ef92e03a7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d658eae1231229292600a005916b2643da5947acf06c18202090f4ef92e03a7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mergable-fee438d1c0961ef2)
[INFO] [stdout] running 12 tests
[INFO] [stderr]    Doc-tests mergable
[INFO] [stdout] test cell::test_revert ... ok
[INFO] [stdout] test dict::test_dict_remove_old ... ok
[INFO] [stdout] test dict::test_undo_remove ... ok
[INFO] [stdout] test dict::test_undo_insert ... ok
[INFO] [stdout] test dict::test_undo_update ... ok
[INFO] [stdout] test dict::test_undo_old_update ... ok
[INFO] [stdout] test dict::test_dict_remove_new ... ok
[INFO] [stdout] test cell::test_update ... ok
[INFO] [stdout] test cell::test_revert_stale ... ok
[INFO] [stdout] test dict::test_dict_remove_merge_revive ... ok
[INFO] [stdout] test dict::test_dict ... ok
[INFO] [stdout] test cell::test_merge ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stdout] test src/cell.rs - cell::Cell<T,crate::Sequence<SequenceFactory>>::borrow_mut (line 26) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/cell.rs - cell::Cell<T,crate::Sequence<SequenceFactory>>::borrow_mut (line 26) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Context` in the crate root
[INFO] [stdout]  --> src/cell.rs:27:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut ctx = crate::Context::default();
[INFO] [stdout]   |                      ^^^^^^^ not found in the crate root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::task::Context;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mergable::Context;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::task::Context;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Cell`
[INFO] [stdout]  --> src/cell.rs:28:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let mut ctx = Cell::new(&mut ctx, 0);
[INFO] [stdout]   |               ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::cell::Cell;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mergable::Cell;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::Cell;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `cell` in this scope
[INFO] [stdout]  --> src/cell.rs:29:2
[INFO] [stdout]   |
[INFO] [stdout] 5 | *cell.borrow_mut(ctx) += 1;
[INFO] [stdout]   |  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `cell` in this scope
[INFO] [stdout]  --> src/cell.rs:30:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | cell.set(ctx, cell.clone() + 1);
[INFO] [stdout]   | ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `cell` in this scope
[INFO] [stdout]  --> src/cell.rs:30:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | cell.set(ctx, cell.clone() + 1);
[INFO] [stdout]   |               ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/cell.rs - cell::Cell<T,crate::Sequence<SequenceFactory>>::borrow_mut (line 26)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d658eae1231229292600a005916b2643da5947acf06c18202090f4ef92e03a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d658eae1231229292600a005916b2643da5947acf06c18202090f4ef92e03a7", kill_on_drop: false }`
[INFO] [stdout] 6d658eae1231229292600a005916b2643da5947acf06c18202090f4ef92e03a7