[INFO] fetching crate gc 0.3.6...
[INFO] testing gc-0.3.6 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate gc 0.3.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate gc 0.3.6 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 gc 0.3.6
[INFO] finished tweaking crates.io crate gc 0.3.6
[INFO] tweaked toml for crates.io crate gc 0.3.6 written to /workspace/builds/worker-5/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gc_derive v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 28568b9e09e89c5e06ff33bd1695913515e4581b9fc20216cb64b8222bb13a3b
[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" "28568b9e09e89c5e06ff33bd1695913515e4581b9fc20216cb64b8222bb13a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28568b9e09e89c5e06ff33bd1695913515e4581b9fc20216cb64b8222bb13a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28568b9e09e89c5e06ff33bd1695913515e4581b9fc20216cb64b8222bb13a3b", kill_on_drop: false }`
[INFO] [stdout] 28568b9e09e89c5e06ff33bd1695913515e4581b9fc20216cb64b8222bb13a3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 518eb6f0306f012ef553ba68edfb6c1e84db0d92fe0874ddef0be93472ccc68f
[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" "518eb6f0306f012ef553ba68edfb6c1e84db0d92fe0874ddef0be93472ccc68f", kill_on_drop: false }`
[INFO] [stderr]    Compiling gc v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "518eb6f0306f012ef553ba68edfb6c1e84db0d92fe0874ddef0be93472ccc68f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "518eb6f0306f012ef553ba68edfb6c1e84db0d92fe0874ddef0be93472ccc68f", kill_on_drop: false }`
[INFO] [stdout] 518eb6f0306f012ef553ba68edfb6c1e84db0d92fe0874ddef0be93472ccc68f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d3e05688cb340c19eb654b6a73a33c6bb089e768350510b8ea2d426fab96c0fe
[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" "d3e05688cb340c19eb654b6a73a33c6bb089e768350510b8ea2d426fab96c0fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling gc_derive v0.3.6
[INFO] [stderr]    Compiling gc v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.06s
[INFO] running `Command { std: "docker" "inspect" "d3e05688cb340c19eb654b6a73a33c6bb089e768350510b8ea2d426fab96c0fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e05688cb340c19eb654b6a73a33c6bb089e768350510b8ea2d426fab96c0fe", kill_on_drop: false }`
[INFO] [stdout] d3e05688cb340c19eb654b6a73a33c6bb089e768350510b8ea2d426fab96c0fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 7aff0dee1c166b68916f8317145054ff2396efc669ef6900154d54a59013da13
[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" "7aff0dee1c166b68916f8317145054ff2396efc669ef6900154d54a59013da13", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gc-c123adb840849976
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/finalize-442cd7e5c69f65c1
[INFO] [stdout] running 0 tests
[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 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gc_semantics-6fa5b0c85b408e64
[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 3 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gymnastics_cycle-f60387e5de3cc924
[INFO] [stdout] test basic_allocate ... ok
[INFO] [stdout] test basic_cycle_allocate ... ok
[INFO] [stdout] test gccell_rooting ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/i128-1d6a69971a690b71
[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 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test u128 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trace_impl-5445003d3df7691c
[INFO] [stdout] test i128 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gc
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - Gc<T>::into_raw (line 142) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRef::map (line 674) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRefMut::map (line 794) ... ok
[INFO] [stdout] test src/lib.rs - GcCell<T>::try_borrow_mut (line 561) ... ok
[INFO] [stdout] test src/lib.rs - GcCell<T>::try_borrow (line 519) ... ok
[INFO] [stdout] test src/lib.rs - GcCellRef::map_split (line 709) ... ok
[INFO] [stdout] test src/lib.rs - Gc<T>::from_raw (line 168) ... ok
[INFO] [stdout] test src/lib.rs - Gc<T>::new (line 64) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.23s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7aff0dee1c166b68916f8317145054ff2396efc669ef6900154d54a59013da13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aff0dee1c166b68916f8317145054ff2396efc669ef6900154d54a59013da13", kill_on_drop: false }`
[INFO] [stdout] 7aff0dee1c166b68916f8317145054ff2396efc669ef6900154d54a59013da13