[INFO] fetching crate nest-guard 0.1.0...
[INFO] testing nest-guard-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate nest-guard 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate nest-guard 0.1.0
[INFO] finished tweaking crates.io crate nest-guard 0.1.0
[INFO] tweaked toml for crates.io crate nest-guard 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nest-guard 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nest-guard 0.1.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b463f5620c924286fadf8da458cfaf90f22fb355eb91c57d3d926a63819dfc73
[INFO] running `Command { std: "docker" "start" "-a" "b463f5620c924286fadf8da458cfaf90f22fb355eb91c57d3d926a63819dfc73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b463f5620c924286fadf8da458cfaf90f22fb355eb91c57d3d926a63819dfc73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b463f5620c924286fadf8da458cfaf90f22fb355eb91c57d3d926a63819dfc73", kill_on_drop: false }`
[INFO] [stdout] b463f5620c924286fadf8da458cfaf90f22fb355eb91c57d3d926a63819dfc73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2961cd081a46dc2892db96001d768d89559db85f70029ee9dec9903b2871cab
[INFO] running `Command { std: "docker" "start" "-a" "d2961cd081a46dc2892db96001d768d89559db85f70029ee9dec9903b2871cab", kill_on_drop: false }`
[INFO] [stderr]    Compiling nest-guard v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "d2961cd081a46dc2892db96001d768d89559db85f70029ee9dec9903b2871cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2961cd081a46dc2892db96001d768d89559db85f70029ee9dec9903b2871cab", kill_on_drop: false }`
[INFO] [stdout] d2961cd081a46dc2892db96001d768d89559db85f70029ee9dec9903b2871cab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a54cb81a1f949f2a573a66f180c4f8d08a30358ebd98c06613ffea314d9b800
[INFO] running `Command { std: "docker" "start" "-a" "4a54cb81a1f949f2a573a66f180c4f8d08a30358ebd98c06613ffea314d9b800", kill_on_drop: false }`
[INFO] [stderr]    Compiling nest-guard v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "4a54cb81a1f949f2a573a66f180c4f8d08a30358ebd98c06613ffea314d9b800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a54cb81a1f949f2a573a66f180c4f8d08a30358ebd98c06613ffea314d9b800", kill_on_drop: false }`
[INFO] [stdout] 4a54cb81a1f949f2a573a66f180c4f8d08a30358ebd98c06613ffea314d9b800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8553326871b3a8c38edf8bec35db966949790896e4852bedfc56a1db45356913
[INFO] running `Command { std: "docker" "start" "-a" "8553326871b3a8c38edf8bec35db966949790896e4852bedfc56a1db45356913", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nest_guard-beaab7f111f7eb9a)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test rc::test::test_many_rc ... ok
[INFO] [stdout] test sync::test::test_many_arc ... ok
[INFO] [stdout] test cell::test::test_many_refcell ... ok
[INFO] [stdout] test sync::test::test_many_mutex ... ok
[INFO] [stdout] test test::test_rc_refcell ... ok
[INFO] [stdout] test test::test_reassign_refcell_stack ... ok
[INFO] [stdout] test sync::test::test_many_rwlock ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nest_guard
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "8553326871b3a8c38edf8bec35db966949790896e4852bedfc56a1db45356913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8553326871b3a8c38edf8bec35db966949790896e4852bedfc56a1db45356913", kill_on_drop: false }`
[INFO] [stdout] 8553326871b3a8c38edf8bec35db966949790896e4852bedfc56a1db45356913