[INFO] fetching crate mut_static 5.0.0...
[INFO] testing mut_static-5.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate mut_static 5.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate mut_static 5.0.0 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 mut_static 5.0.0
[INFO] finished tweaking crates.io crate mut_static 5.0.0
[INFO] tweaked toml for crates.io crate mut_static 5.0.0 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] 10c5217cca74323bc7d59c9a5e08dfaeb72b53d00f86970c9ca1b830197b31c6
[INFO] running `Command { std: "docker" "start" "-a" "10c5217cca74323bc7d59c9a5e08dfaeb72b53d00f86970c9ca1b830197b31c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10c5217cca74323bc7d59c9a5e08dfaeb72b53d00f86970c9ca1b830197b31c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10c5217cca74323bc7d59c9a5e08dfaeb72b53d00f86970c9ca1b830197b31c6", kill_on_drop: false }`
[INFO] [stdout] 10c5217cca74323bc7d59c9a5e08dfaeb72b53d00f86970c9ca1b830197b31c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9a657436322337d351c529caeb12256760f74ee405a03eaeb1024844604f7f2
[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" "e9a657436322337d351c529caeb12256760f74ee405a03eaeb1024844604f7f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling mut_static v5.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:34:56
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:46:56
[INFO] [stdout]    |
[INFO] [stdout] 46 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:54:67
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Err(err) => return Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:74:56
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "e9a657436322337d351c529caeb12256760f74ee405a03eaeb1024844604f7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a657436322337d351c529caeb12256760f74ee405a03eaeb1024844604f7f2", kill_on_drop: false }`
[INFO] [stdout] e9a657436322337d351c529caeb12256760f74ee405a03eaeb1024844604f7f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 122d68ce7b54398416d158ccc1c68332a0e1fa33883cc322245b0df9c050e8ad
[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" "122d68ce7b54398416d158ccc1c68332a0e1fa33883cc322245b0df9c050e8ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling mut_static v5.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:34:56
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:46:56
[INFO] [stdout]    |
[INFO] [stdout] 46 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:54:67
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Err(err) => return Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:74:56
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:34:56
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:46:56
[INFO] [stdout]    |
[INFO] [stdout] 46 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:54:67
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 Err(err) => return Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mut_static.rs:74:56
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/test/mod.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         mem::replace(test_obj.deref_mut(), TestStruct::new(2));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "122d68ce7b54398416d158ccc1c68332a0e1fa33883cc322245b0df9c050e8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "122d68ce7b54398416d158ccc1c68332a0e1fa33883cc322245b0df9c050e8ad", kill_on_drop: false }`
[INFO] [stdout] 122d68ce7b54398416d158ccc1c68332a0e1fa33883cc322245b0df9c050e8ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c07e39a9a0e823b48060271cbc8e3f25e6b78f83b01eec28d6a4a7829db9137f
[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" "c07e39a9a0e823b48060271cbc8e3f25e6b78f83b01eec28d6a4a7829db9137f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> src/mut_static.rs:34:56
[INFO] [stdout] test test::test ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 34 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:46:56
[INFO] [stderr]    |
[INFO] [stderr] 46 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:54:67
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 Err(err) => return Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:74:56
[INFO] [stderr]    |
[INFO] [stderr] 74 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:34:56
[INFO] [stderr]    |
[INFO] [stderr] 34 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:46:56
[INFO] [stderr]    |
[INFO] [stderr] 46 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:54:67
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 Err(err) => return Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/mut_static.rs:74:56
[INFO] [stderr]    |
[INFO] [stderr] 74 |             Err(err) => Err(ErrorKind::PoisonError(err.description().to_string(), format!("{}", err)).into()),
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/test/mod.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         mem::replace(test_obj.deref_mut(), TestStruct::new(2));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mut_static-dd4c384c55b59d3f
[INFO] [stderr]    Doc-tests mut_static
[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" "c07e39a9a0e823b48060271cbc8e3f25e6b78f83b01eec28d6a4a7829db9137f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c07e39a9a0e823b48060271cbc8e3f25e6b78f83b01eec28d6a4a7829db9137f", kill_on_drop: false }`
[INFO] [stdout] c07e39a9a0e823b48060271cbc8e3f25e6b78f83b01eec28d6a4a7829db9137f