[INFO] fetching crate mrtreader 0.1.0...
[INFO] testing mrtreader-0.1.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mrtreader 0.1.0 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate mrtreader 0.1.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-25/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43f7888673a7b2be593a2ac86bbfb195bfc5873f0f8af94995faeea1259eb998
[INFO] running `Command { std: "docker" "start" "-a" "43f7888673a7b2be593a2ac86bbfb195bfc5873f0f8af94995faeea1259eb998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43f7888673a7b2be593a2ac86bbfb195bfc5873f0f8af94995faeea1259eb998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f7888673a7b2be593a2ac86bbfb195bfc5873f0f8af94995faeea1259eb998", kill_on_drop: false }`
[INFO] [stdout] 43f7888673a7b2be593a2ac86bbfb195bfc5873f0f8af94995faeea1259eb998
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 387000fc173c93be07db2c5ad56bea5a0048ce944ac5e284f4c9edd966136201
[INFO] running `Command { std: "docker" "start" "-a" "387000fc173c93be07db2c5ad56bea5a0048ce944ac5e284f4c9edd966136201", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling byteorder v1.4.3
[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 0.70s
[INFO] running `Command { std: "docker" "inspect" "387000fc173c93be07db2c5ad56bea5a0048ce944ac5e284f4c9edd966136201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "387000fc173c93be07db2c5ad56bea5a0048ce944ac5e284f4c9edd966136201", kill_on_drop: false }`
[INFO] [stdout] 387000fc173c93be07db2c5ad56bea5a0048ce944ac5e284f4c9edd966136201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12bfb2d169a613f1e41818bfaeb5b6e29e8104ca1c6aaa0f033d7bccce5a2172
[INFO] running `Command { std: "docker" "start" "-a" "12bfb2d169a613f1e41818bfaeb5b6e29e8104ca1c6aaa0f033d7bccce5a2172", 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 test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "12bfb2d169a613f1e41818bfaeb5b6e29e8104ca1c6aaa0f033d7bccce5a2172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12bfb2d169a613f1e41818bfaeb5b6e29e8104ca1c6aaa0f033d7bccce5a2172", kill_on_drop: false }`
[INFO] [stdout] 12bfb2d169a613f1e41818bfaeb5b6e29e8104ca1c6aaa0f033d7bccce5a2172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7aed14fda97e758afc08e7929c861136d2fb35dd9bd833ed66ad819eb881a2b6
[INFO] running `Command { std: "docker" "start" "-a" "7aed14fda97e758afc08e7929c861136d2fb35dd9bd833ed66ad819eb881a2b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mrtreader-1ac16f1a5d65c814)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests mrtreader
[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] [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" "7aed14fda97e758afc08e7929c861136d2fb35dd9bd833ed66ad819eb881a2b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aed14fda97e758afc08e7929c861136d2fb35dd9bd833ed66ad819eb881a2b6", kill_on_drop: false }`
[INFO] [stdout] 7aed14fda97e758afc08e7929c861136d2fb35dd9bd833ed66ad819eb881a2b6