[INFO] fetching crate shared_cell 0.5.0...
[INFO] testing shared_cell-0.5.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate shared_cell 0.5.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate shared_cell 0.5.0
[INFO] finished tweaking crates.io crate shared_cell 0.5.0
[INFO] tweaked toml for crates.io crate shared_cell 0.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shared_cell 0.5.0 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 shared_cell 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.32
[INFO] [stderr]   Downloaded pin-project-lite v0.2.12
[INFO] [stderr]   Downloaded async_main_macro v0.4.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.23
[INFO] [stderr]   Downloaded addr2line v0.20.0
[INFO] [stderr]   Downloaded futures v0.3.28
[INFO] [stderr]   Downloaded backtrace v0.3.68
[INFO] [stderr]   Downloaded cc v1.0.82
[INFO] [stderr]   Downloaded whisk v0.12.0
[INFO] [stderr]   Downloaded async_main v0.4.0
[INFO] [stderr]   Downloaded syn v2.0.27
[INFO] [stderr]   Downloaded futures-executor v0.3.28
[INFO] [stderr]   Downloaded pasts v0.14.3
[INFO] [stderr]   Downloaded tokio-macros v2.1.0
[INFO] [stderr]   Downloaded object v0.31.1
[INFO] [stderr]   Downloaded libc v0.2.147
[INFO] [stderr]   Downloaded tokio v1.30.0
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1581ae086e849bd15dcc9f74b5d1b9f3ff9f9d6cf543b55b9a8e8d9b4bc6702d
[INFO] running `Command { std: "docker" "start" "-a" "1581ae086e849bd15dcc9f74b5d1b9f3ff9f9d6cf543b55b9a8e8d9b4bc6702d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1581ae086e849bd15dcc9f74b5d1b9f3ff9f9d6cf543b55b9a8e8d9b4bc6702d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1581ae086e849bd15dcc9f74b5d1b9f3ff9f9d6cf543b55b9a8e8d9b4bc6702d", kill_on_drop: false }`
[INFO] [stdout] 1581ae086e849bd15dcc9f74b5d1b9f3ff9f9d6cf543b55b9a8e8d9b4bc6702d
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 099de6212432b13d758d5c4815525e9bffd0dc29340a432d2086b3d0813a595b
[INFO] running `Command { std: "docker" "start" "-a" "099de6212432b13d758d5c4815525e9bffd0dc29340a432d2086b3d0813a595b", kill_on_drop: false }`
[INFO] [stderr]    Compiling shared_cell v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused pinned boxed `Future` trait object that must be used
[INFO] [stdout]    --> src/task_group.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 list.swap_remove(task);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "099de6212432b13d758d5c4815525e9bffd0dc29340a432d2086b3d0813a595b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "099de6212432b13d758d5c4815525e9bffd0dc29340a432d2086b3d0813a595b", kill_on_drop: false }`
[INFO] [stdout] 099de6212432b13d758d5c4815525e9bffd0dc29340a432d2086b3d0813a595b
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e485354bb11b6ff940be050bf1054571fecc0e6ee0c23a396cef77c68c45982f
[INFO] running `Command { std: "docker" "start" "-a" "e485354bb11b6ff940be050bf1054571fecc0e6ee0c23a396cef77c68c45982f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling pin-project-lite v0.2.12
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling async_main_macro v0.4.0
[INFO] [stderr]    Compiling whisk v0.12.0
[INFO] [stderr]    Compiling pasts v0.14.3
[INFO] [stdout] warning: unused pinned boxed `Future` trait object that must be used
[INFO] [stdout]    --> src/task_group.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 list.swap_remove(task);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling tokio v1.30.0
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling async_main v0.4.0
[INFO] [stderr]    Compiling shared_cell v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused pinned boxed `Future` trait object that must be used
[INFO] [stdout]    --> src/task_group.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 list.swap_remove(task);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 11.47s
[INFO] running `Command { std: "docker" "inspect" "e485354bb11b6ff940be050bf1054571fecc0e6ee0c23a396cef77c68c45982f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e485354bb11b6ff940be050bf1054571fecc0e6ee0c23a396cef77c68c45982f", kill_on_drop: false }`
[INFO] [stdout] e485354bb11b6ff940be050bf1054571fecc0e6ee0c23a396cef77c68c45982f
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3bb07a3d2c4e2362981e3a0479b2391e176a3789807ed8652d0ca853b7fb722e
[INFO] running `Command { std: "docker" "start" "-a" "3bb07a3d2c4e2362981e3a0479b2391e176a3789807ed8652d0ca853b7fb722e", kill_on_drop: false }`
[INFO] [stderr] warning: unused pinned boxed `Future` trait object that must be used
[INFO] [stdout] 
[INFO] [stderr]    --> src/task_group.rs:160:17
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 160 |                 list.swap_remove(task);
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `shared_cell` (lib) generated 1 warning
[INFO] [stderr] warning: `shared_cell` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/shared_cell-7936abb26639c97f)
[INFO] [stderr]    Doc-tests shared_cell
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/shared_cell.rs - shared_cell::SharedCell (line 43) - compile fail ... ok
[INFO] [stdout] test src/shared_cell.rs - shared_cell::SharedCell (line 15) ... ok
[INFO] [stdout] test src/task_group.rs - task_group::TaskGroup (line 59) ... ok
[INFO] [stdout] test src/task_group.rs - task_group::spawn (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3bb07a3d2c4e2362981e3a0479b2391e176a3789807ed8652d0ca853b7fb722e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bb07a3d2c4e2362981e3a0479b2391e176a3789807ed8652d0ca853b7fb722e", kill_on_drop: false }`
[INFO] [stdout] 3bb07a3d2c4e2362981e3a0479b2391e176a3789807ed8652d0ca853b7fb722e