[INFO] fetching crate mrtreader 0.1.0...
[INFO] testing mrtreader-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate mrtreader 0.1.0 into /workspace/builds/worker-93/source
[INFO] validating manifest of crates.io crate mrtreader 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mrtreader 0.1.0
[INFO] finished tweaking crates.io crate mrtreader 0.1.0
[INFO] tweaked toml for crates.io crate mrtreader 0.1.0 written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dafdfcb143993fed77d478f72e03a69b5da5dd137679fe4e0f2e64de648d0aa3
[INFO] running `Command { std: "docker" "start" "-a" "dafdfcb143993fed77d478f72e03a69b5da5dd137679fe4e0f2e64de648d0aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dafdfcb143993fed77d478f72e03a69b5da5dd137679fe4e0f2e64de648d0aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dafdfcb143993fed77d478f72e03a69b5da5dd137679fe4e0f2e64de648d0aa3", kill_on_drop: false }`
[INFO] [stdout] dafdfcb143993fed77d478f72e03a69b5da5dd137679fe4e0f2e64de648d0aa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caf8d5998df0a153d2771eb8ba9349a3215c2c1b0eeb1c65866f46ac80a14cbb
[INFO] running `Command { std: "docker" "start" "-a" "caf8d5998df0a153d2771eb8ba9349a3215c2c1b0eeb1c65866f46ac80a14cbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mrtreader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `MRTReader`
[INFO] [stdout]   --> src/mrt.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MRTReader<T> where T: Read
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Record`
[INFO] [stdout]   --> src/mrt.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub enum Record
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/mrt.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn read(&mut self) -> Result<Record, Error>
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "caf8d5998df0a153d2771eb8ba9349a3215c2c1b0eeb1c65866f46ac80a14cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf8d5998df0a153d2771eb8ba9349a3215c2c1b0eeb1c65866f46ac80a14cbb", kill_on_drop: false }`
[INFO] [stdout] caf8d5998df0a153d2771eb8ba9349a3215c2c1b0eeb1c65866f46ac80a14cbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 076926d2e4880294210dc073c273258bac9644c643ea73ac76eb7b2ad9b56432
[INFO] running `Command { std: "docker" "start" "-a" "076926d2e4880294210dc073c273258bac9644c643ea73ac76eb7b2ad9b56432", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mrtreader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `MRTReader`
[INFO] [stdout]   --> src/mrt.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MRTReader<T> where T: Read
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Record`
[INFO] [stdout]   --> src/mrt.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub enum Record
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/mrt.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn read(&mut self) -> Result<Record, Error>
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "076926d2e4880294210dc073c273258bac9644c643ea73ac76eb7b2ad9b56432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "076926d2e4880294210dc073c273258bac9644c643ea73ac76eb7b2ad9b56432", kill_on_drop: false }`
[INFO] [stdout] 076926d2e4880294210dc073c273258bac9644c643ea73ac76eb7b2ad9b56432
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b42e966ed3be5137d0ad015890456e984d95ce547e3673a97fd92e7bbbc0da0
[INFO] running `Command { std: "docker" "start" "-a" "3b42e966ed3be5137d0ad015890456e984d95ce547e3673a97fd92e7bbbc0da0", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `MRTReader`
[INFO] [stderr]   --> src/mrt.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct MRTReader<T> where T: Read
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Record`
[INFO] [stderr]   --> src/mrt.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub enum Record
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read`
[INFO] [stderr]   --> src/mrt.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn read(&mut self) -> Result<Record, Error>
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mrtreader` (lib) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mrtreader-1ac16f1a5d65c814)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... 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] [stderr]    Doc-tests mrtreader
[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" "3b42e966ed3be5137d0ad015890456e984d95ce547e3673a97fd92e7bbbc0da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b42e966ed3be5137d0ad015890456e984d95ce547e3673a97fd92e7bbbc0da0", kill_on_drop: false }`
[INFO] [stdout] 3b42e966ed3be5137d0ad015890456e984d95ce547e3673a97fd92e7bbbc0da0