[INFO] fetching crate cell 0.1.8...
[INFO] testing cell-0.1.8 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate cell 0.1.8 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cell 0.1.8 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cell 0.1.8
[INFO] finished tweaking crates.io crate cell 0.1.8
[INFO] tweaked toml for crates.io crate cell 0.1.8 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 60e3142b59cdd788c1568a3161978d88763239a61a5e261ba32fc1612f96f994
[INFO] running `Command { std: "docker" "start" "-a" "60e3142b59cdd788c1568a3161978d88763239a61a5e261ba32fc1612f96f994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60e3142b59cdd788c1568a3161978d88763239a61a5e261ba32fc1612f96f994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e3142b59cdd788c1568a3161978d88763239a61a5e261ba32fc1612f96f994", kill_on_drop: false }`
[INFO] [stdout] 60e3142b59cdd788c1568a3161978d88763239a61a5e261ba32fc1612f96f994
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af88f6eb12e0e15cfd3769d941f7794475ec4434fca87e3f88e75193ad7622b1
[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" "af88f6eb12e0e15cfd3769d941f7794475ec4434fca87e3f88e75193ad7622b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cell v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "af88f6eb12e0e15cfd3769d941f7794475ec4434fca87e3f88e75193ad7622b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af88f6eb12e0e15cfd3769d941f7794475ec4434fca87e3f88e75193ad7622b1", kill_on_drop: false }`
[INFO] [stdout] af88f6eb12e0e15cfd3769d941f7794475ec4434fca87e3f88e75193ad7622b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69a621d572365d4f58514b9da025b259a2a3889a862ed57336f86b946d45bc48
[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" "69a621d572365d4f58514b9da025b259a2a3889a862ed57336f86b946d45bc48", kill_on_drop: false }`
[INFO] [stderr]    Compiling cell v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "69a621d572365d4f58514b9da025b259a2a3889a862ed57336f86b946d45bc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69a621d572365d4f58514b9da025b259a2a3889a862ed57336f86b946d45bc48", kill_on_drop: false }`
[INFO] [stdout] 69a621d572365d4f58514b9da025b259a2a3889a862ed57336f86b946d45bc48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c5816250002d5bee94bfeef8ef74fb257cda2d534f3019937304d1a00ea68300
[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" "c5816250002d5bee94bfeef8ef74fb257cda2d534f3019937304d1a00ea68300", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cell-edc0541c8d30342a
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cell-d6981eda61a40490
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test as_ptr ... ok
[INFO] [stdout] test cell_replace ... ok
[INFO] [stdout] test double_imm_borrow ... ok
[INFO] [stdout] test double_borrow_single_release_no_borrow_mut ... ok
[INFO] [stdout] test cell_default ... ok
[INFO] [stdout] test no_double_borrow_mut ... ok
[INFO] [stdout] test mut_release_borrow_mut ... ok
[INFO] [stdout] test no_mut_then_imm_borrow ... ok
[INFO] [stdout] test imm_release_borrow_mut ... ok
[INFO] [stdout] test ref_and_refmut_have_sensible_show ... ok
[INFO] [stdout] test ref_map_does_not_update_flag ... ok
[INFO] [stdout] test ref_map_split ... ok
[INFO] [stdout] test refval_clone ... ok
[INFO] [stdout] test ref_clone_updates_flag ... ok
[INFO] [stdout] test ref_map_accessor ... ok
[INFO] [stdout] test ref_map_split_updates_flag ... ok
[INFO] [stdout] test cell_set ... ok
[INFO] [stdout] test cell_into_inner ... ok
[INFO] [stdout] test refcell_unsized ... ok
[INFO] [stdout] test ref_mut_map_split ... ok
[INFO] [stdout] test ref_mut_map_accessor ... ok
[INFO] [stdout] test no_imm_then_borrow_mut ... ok
[INFO] [stdout] test refval_with_iterator ... ok
[INFO] [stdout] test refval_map ... ok
[INFO] [stdout] test refval_debug ... ok
[INFO] [stdout] test refcell_default ... ok
[INFO] [stdout] test refvalmut ... ok
[INFO] [stdout] test discard_doesnt_unborrow ... ok
[INFO] [stdout] test refcell_swap_borrows ... ok
[INFO] [stdout] test refcell_replace_borrows ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cell
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::as_ptr (line 359) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::new (line 97) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::get_mut (line 387) ... ok
[INFO] [stdout] test src/cell.rs - cell::Ref::map (line 587) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::replace (line 141) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::into_inner (line 114) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::borrow (line 225) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::borrow (line 214) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::borrow_mut (line 292) ... ok
[INFO] [stdout] test src/cell.rs - cell::Ref::map_split (line 616) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefMut::map (line 667) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::try_borrow (line 253) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::swap (line 187) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::borrow_mut (line 304) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::replace_with (line 162) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefCell<T>::try_borrow_mut (line 332) ... ok
[INFO] [stdout] test src/cell.rs - cell::RefMut::map_split (line 705) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c5816250002d5bee94bfeef8ef74fb257cda2d534f3019937304d1a00ea68300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5816250002d5bee94bfeef8ef74fb257cda2d534f3019937304d1a00ea68300", kill_on_drop: false }`
[INFO] [stdout] c5816250002d5bee94bfeef8ef74fb257cda2d534f3019937304d1a00ea68300