[INFO] cloning repository https://github.com/grncdr/mmr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grncdr/mmr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrncdr%2Fmmr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrncdr%2Fmmr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f5dc7f7682de2c90374d29d7be55096a4045d0c
[INFO] testing grncdr/mmr against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrncdr%2Fmmr" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grncdr/mmr on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grncdr/mmr
[INFO] finished tweaking git repo https://github.com/grncdr/mmr
[INFO] tweaked toml for git repo https://github.com/grncdr/mmr written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/grncdr/mmr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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 exec v0.3.1
[INFO] [stderr]   Downloaded utime v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5e5659a41afe420aa8eddbf10ed105ee19a970b1380a46c5f854a6db0e47621
[INFO] running `Command { std: "docker" "start" "-a" "d5e5659a41afe420aa8eddbf10ed105ee19a970b1380a46c5f854a6db0e47621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5e5659a41afe420aa8eddbf10ed105ee19a970b1380a46c5f854a6db0e47621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e5659a41afe420aa8eddbf10ed105ee19a970b1380a46c5f854a6db0e47621", kill_on_drop: false }`
[INFO] [stdout] d5e5659a41afe420aa8eddbf10ed105ee19a970b1380a46c5f854a6db0e47621
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06953045c45bd59b744f10b1eb09f8045207d02963e9ee405c9c1900f1c0c598
[INFO] running `Command { std: "docker" "start" "-a" "06953045c45bd59b744f10b1eb09f8045207d02963e9ee405c9c1900f1c0c598", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.3.4
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling errno v0.2.3
[INFO] [stderr]    Compiling exec v0.3.1
[INFO] [stderr]    Compiling kernel32-sys v0.1.4
[INFO] [stderr]    Compiling clap v2.31.1
[INFO] [stderr]    Compiling utime v0.1.3
[INFO] [stderr]    Compiling mmr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn cause(&self) -> Option<&ErrorTrait> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn ErrorTrait`
[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/main.rs:85:38
[INFO] [stdout]    |
[INFO] [stdout] 85 |             &Error::Exec(ref e) => e.description(),
[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/main.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |             &Error::IO(ref e) => e.description(),
[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/main.rs:87:39
[INFO] [stdout]    |
[INFO] [stdout] 87 |             &Error::Clock(ref e) => e.description(),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             &Error::Exec(ref e) => e.cause(),
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:93:36
[INFO] [stdout]    |
[INFO] [stdout] 93 |             &Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:94:39
[INFO] [stdout]    |
[INFO] [stdout] 94 |             &Error::Clock(ref e) => e.cause(),
[INFO] [stdout]    |                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.84s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "06953045c45bd59b744f10b1eb09f8045207d02963e9ee405c9c1900f1c0c598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06953045c45bd59b744f10b1eb09f8045207d02963e9ee405c9c1900f1c0c598", kill_on_drop: false }`
[INFO] [stdout] 06953045c45bd59b744f10b1eb09f8045207d02963e9ee405c9c1900f1c0c598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c05951d23147d881c1c4d610931ec5139aa1d3a523ab583453e1d1e3ac16ee2
[INFO] running `Command { std: "docker" "start" "-a" "2c05951d23147d881c1c4d610931ec5139aa1d3a523ab583453e1d1e3ac16ee2", kill_on_drop: false }`
[INFO] [stderr]    Compiling mmr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn cause(&self) -> Option<&ErrorTrait> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn ErrorTrait`
[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/main.rs:85:38
[INFO] [stdout]    |
[INFO] [stdout] 85 |             &Error::Exec(ref e) => e.description(),
[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/main.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |             &Error::IO(ref e) => e.description(),
[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/main.rs:87:39
[INFO] [stdout]    |
[INFO] [stdout] 87 |             &Error::Clock(ref e) => e.description(),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             &Error::Exec(ref e) => e.cause(),
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:93:36
[INFO] [stdout]    |
[INFO] [stdout] 93 |             &Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:94:39
[INFO] [stdout]    |
[INFO] [stdout] 94 |             &Error::Clock(ref e) => e.cause(),
[INFO] [stdout]    |                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2c05951d23147d881c1c4d610931ec5139aa1d3a523ab583453e1d1e3ac16ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c05951d23147d881c1c4d610931ec5139aa1d3a523ab583453e1d1e3ac16ee2", kill_on_drop: false }`
[INFO] [stdout] 2c05951d23147d881c1c4d610931ec5139aa1d3a523ab583453e1d1e3ac16ee2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 44ccf55d0a7a5dbead627a0e89db9ea043d69283356bc5cb13d5e1cac8bd4de6
[INFO] running `Command { std: "docker" "start" "-a" "44ccf55d0a7a5dbead627a0e89db9ea043d69283356bc5cb13d5e1cac8bd4de6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:90:32
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 90 |     fn cause(&self) -> Option<&ErrorTrait> {
[INFO] [stdout] 
[INFO] [stderr]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn ErrorTrait`
[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/main.rs:85:38
[INFO] [stderr]    |
[INFO] [stderr] 85 |             &Error::Exec(ref e) => e.description(),
[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/main.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |             &Error::IO(ref e) => e.description(),
[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/main.rs:87:39
[INFO] [stderr]    |
[INFO] [stderr] 87 |             &Error::Clock(ref e) => e.description(),
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:92:38
[INFO] [stderr]    |
[INFO] [stderr] 92 |             &Error::Exec(ref e) => e.cause(),
[INFO] [stderr]    |                                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:93:36
[INFO] [stderr]    |
[INFO] [stderr] 93 |             &Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:94:39
[INFO] [stderr]    |
[INFO] [stderr] 94 |             &Error::Clock(ref e) => e.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mmr-db1a8cd9bf3ae816)
[INFO] running `Command { std: "docker" "inspect" "44ccf55d0a7a5dbead627a0e89db9ea043d69283356bc5cb13d5e1cac8bd4de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44ccf55d0a7a5dbead627a0e89db9ea043d69283356bc5cb13d5e1cac8bd4de6", kill_on_drop: false }`
[INFO] [stdout] 44ccf55d0a7a5dbead627a0e89db9ea043d69283356bc5cb13d5e1cac8bd4de6