[INFO] fetching crate gag 1.0.0...
[INFO] testing gag-1.0.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate gag 1.0.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate gag 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gag 1.0.0
[INFO] finished tweaking crates.io crate gag 1.0.0
[INFO] tweaked toml for crates.io crate gag 1.0.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded filedescriptor v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f84ec1b10efb2aa9b06e7a47bffa5798d3faeeed285f8362a825179ffd23366c
[INFO] running `Command { std: "docker" "start" "-a" "f84ec1b10efb2aa9b06e7a47bffa5798d3faeeed285f8362a825179ffd23366c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f84ec1b10efb2aa9b06e7a47bffa5798d3faeeed285f8362a825179ffd23366c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f84ec1b10efb2aa9b06e7a47bffa5798d3faeeed285f8362a825179ffd23366c", kill_on_drop: false }`
[INFO] [stdout] f84ec1b10efb2aa9b06e7a47bffa5798d3faeeed285f8362a825179ffd23366c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcefa1f7eb8e64e6b43f4e7ffbd1d5c74d662a56bc8e0f646ce4a7b8f2a2bdfa
[INFO] running `Command { std: "docker" "start" "-a" "fcefa1f7eb8e64e6b43f4e7ffbd1d5c74d662a56bc8e0f646ce4a7b8f2a2bdfa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling filedescriptor v0.8.0
[INFO] [stderr]    Compiling gag v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/redirect.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/redirect.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.68s
[INFO] running `Command { std: "docker" "inspect" "fcefa1f7eb8e64e6b43f4e7ffbd1d5c74d662a56bc8e0f646ce4a7b8f2a2bdfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcefa1f7eb8e64e6b43f4e7ffbd1d5c74d662a56bc8e0f646ce4a7b8f2a2bdfa", kill_on_drop: false }`
[INFO] [stdout] fcefa1f7eb8e64e6b43f4e7ffbd1d5c74d662a56bc8e0f646ce4a7b8f2a2bdfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41f36b137d24b829ccb67409f76c3c5a5ee426d2319fbefe49b0bc8db85064e8
[INFO] running `Command { std: "docker" "start" "-a" "41f36b137d24b829ccb67409f76c3c5a5ee426d2319fbefe49b0bc8db85064e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/redirect.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/redirect.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling gag v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/redirect.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/redirect.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "41f36b137d24b829ccb67409f76c3c5a5ee426d2319fbefe49b0bc8db85064e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f36b137d24b829ccb67409f76c3c5a5ee426d2319fbefe49b0bc8db85064e8", kill_on_drop: false }`
[INFO] [stdout] 41f36b137d24b829ccb67409f76c3c5a5ee426d2319fbefe49b0bc8db85064e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a0bf121dabca1ffbf215e6ff05c37ce85924ab2be79f1e6692647cfbe309d4de
[INFO] running `Command { std: "docker" "start" "-a" "a0bf121dabca1ffbf215e6ff05c37ce85924ab2be79f1e6692647cfbe309d4de", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/redirect.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/redirect.rs:26:20
[INFO] [stderr]    |
[INFO] [stderr] 26 |         self.error.description()
[INFO] [stderr]    |                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/redirect.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/redirect.rs:26:20
[INFO] [stderr]    |
[INFO] [stderr] 26 |         self.error.description()
[INFO] [stderr]    |                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gag-1e035b233fc7e61d)
[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] [stderr]      Running tests/test_redirect.rs (/opt/rustwide/target/debug/deps/test_redirect-8f7708431307b7da)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_buffer_stderr ... ok
[INFO] [stdout] test test_gag_stderr_twice ... 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] [stderr]    Doc-tests gag
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 33) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/lib.rs - (line 48) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - (line 96) ... ok
[INFO] [stdout] test src/lib.rs - (line 112) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a0bf121dabca1ffbf215e6ff05c37ce85924ab2be79f1e6692647cfbe309d4de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0bf121dabca1ffbf215e6ff05c37ce85924ab2be79f1e6692647cfbe309d4de", kill_on_drop: false }`
[INFO] [stdout] a0bf121dabca1ffbf215e6ff05c37ce85924ab2be79f1e6692647cfbe309d4de
