[INFO] fetching crate gc 0.4.1...
[INFO] testing gc-0.4.1 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate gc 0.4.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate gc 0.4.1 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gc 0.4.1
[INFO] finished tweaking crates.io crate gc 0.4.1
[INFO] tweaked toml for crates.io crate gc 0.4.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf38aeb05b42c3702baaca3b7c22c903ed39690725606054b1a9632bf70f0658
[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" "cf38aeb05b42c3702baaca3b7c22c903ed39690725606054b1a9632bf70f0658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf38aeb05b42c3702baaca3b7c22c903ed39690725606054b1a9632bf70f0658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf38aeb05b42c3702baaca3b7c22c903ed39690725606054b1a9632bf70f0658", kill_on_drop: false }`
[INFO] [stdout] cf38aeb05b42c3702baaca3b7c22c903ed39690725606054b1a9632bf70f0658
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 737c3580b734e9f4ad96d30f5c21baabb78b4ca8406c9fe98c564f882c57f360
[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" "737c3580b734e9f4ad96d30f5c21baabb78b4ca8406c9fe98c564f882c57f360", kill_on_drop: false }`
[INFO] [stderr]    Compiling gc v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "737c3580b734e9f4ad96d30f5c21baabb78b4ca8406c9fe98c564f882c57f360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737c3580b734e9f4ad96d30f5c21baabb78b4ca8406c9fe98c564f882c57f360", kill_on_drop: false }`
[INFO] [stdout] 737c3580b734e9f4ad96d30f5c21baabb78b4ca8406c9fe98c564f882c57f360
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5de8bec94553983d1d8f17dd3c9b1aaf9e21592372e3c85bedf8f60d162a04da
[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" "5de8bec94553983d1d8f17dd3c9b1aaf9e21592372e3c85bedf8f60d162a04da", kill_on_drop: false }`
[INFO] [stderr]    Compiling gc_derive v0.4.1
[INFO] [stderr]    Compiling gc v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.55s
[INFO] running `Command { std: "docker" "inspect" "5de8bec94553983d1d8f17dd3c9b1aaf9e21592372e3c85bedf8f60d162a04da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5de8bec94553983d1d8f17dd3c9b1aaf9e21592372e3c85bedf8f60d162a04da", kill_on_drop: false }`
[INFO] [stdout] 5de8bec94553983d1d8f17dd3c9b1aaf9e21592372e3c85bedf8f60d162a04da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dd87e7fe1f19a1412ac5a53aefe6322b8f10fd42a70c4714a2a4612165ff48bf
[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" "dd87e7fe1f19a1412ac5a53aefe6322b8f10fd42a70c4714a2a4612165ff48bf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gc-dfac7ef23eb99827)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/derive_bounds.rs (/opt/rustwide/target/debug/deps/derive_bounds-f45bcb93c563b3a5)
[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 1 test
[INFO] [stderr]      Running tests/finalize.rs (/opt/rustwide/target/debug/deps/finalize-7b764717c9865987)
[INFO] [stdout] test test_derive_bounds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/from_raw.rs (/opt/rustwide/target/debug/deps/from_raw-4ef73c97dc1e3143)
[INFO] [stdout] test drop_triggers_finalize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/gc_cell_ref.rs (/opt/rustwide/target/debug/deps/gc_cell_ref-997f08cc8257f8bd)
[INFO] [stdout] test test_into_raw ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_gc_cell_ref_mut_map ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/gc_semantics.rs (/opt/rustwide/target/debug/deps/gc_semantics-9b648a37af3462f1)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test ptr_eq ... ok
[INFO] [stdout] test basic_cycle_allocate ... ok
[INFO] [stdout] test gccell_rooting ... ok
[INFO] [stdout] test basic_allocate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/gymnastics_cycle.rs (/opt/rustwide/target/debug/deps/gymnastics_cycle-104cb4f84eb4c8e9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/i128.rs (/opt/rustwide/target/debug/deps/i128-6b820e5be6a8d595)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test i128 ... ok
[INFO] [stderr]      Running tests/trace_impl.rs (/opt/rustwide/target/debug/deps/trace_impl-e62a2e9da71dbce8)
[INFO] [stdout] test u128 ... ok
[INFO] [stderr]      Running tests/unsized.rs (/opt/rustwide/target/debug/deps/unsized-85f42a4744dcbab4)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests gc
[INFO] [stdout] test gc_box_dyn_foo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - GcCell<T>::try_borrow (line 520) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRefMut::map (line 812) ... ok
[INFO] [stdout] test src/lib.rs - Gc<T>::from_raw (line 167) ... ok
[INFO] [stdout] test src/lib.rs - Gc<T>::new (line 61) ... ok
[INFO] [stdout] test src/lib.rs - GcCell<T>::try_borrow_mut (line 562) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRef::map (line 692) ... ok
[INFO] [stdout] test src/lib.rs - Gc<T>::into_raw (line 141) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRef::map_split (line 727) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dd87e7fe1f19a1412ac5a53aefe6322b8f10fd42a70c4714a2a4612165ff48bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd87e7fe1f19a1412ac5a53aefe6322b8f10fd42a70c4714a2a4612165ff48bf", kill_on_drop: false }`
[INFO] [stdout] dd87e7fe1f19a1412ac5a53aefe6322b8f10fd42a70c4714a2a4612165ff48bf