[INFO] fetching crate concat-reader 0.1.0...
[INFO] testing concat-reader-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate concat-reader 0.1.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate concat-reader 0.1.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat-reader 0.1.0
[INFO] finished tweaking crates.io crate concat-reader 0.1.0
[INFO] tweaked toml for crates.io crate concat-reader 0.1.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43324dbae0f65fe5667aa9a4547067115a9421d99154a8a85157dbcd99521451
[INFO] running `Command { std: "docker" "start" "-a" "43324dbae0f65fe5667aa9a4547067115a9421d99154a8a85157dbcd99521451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43324dbae0f65fe5667aa9a4547067115a9421d99154a8a85157dbcd99521451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43324dbae0f65fe5667aa9a4547067115a9421d99154a8a85157dbcd99521451", kill_on_drop: false }`
[INFO] [stdout] 43324dbae0f65fe5667aa9a4547067115a9421d99154a8a85157dbcd99521451
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e8a6d4fc5fc5d86c4ba4713ffb13fbe4bd3948eaa4eb31aa1a207d84781622c
[INFO] running `Command { std: "docker" "start" "-a" "0e8a6d4fc5fc5d86c4ba4713ffb13fbe4bd3948eaa4eb31aa1a207d84781622c", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat-reader v0.1.0 (/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/file.rs:167:51
[INFO] [stdout]     |
[INFO] [stdout] 167 |             return Err(io::Error::new(e.kind(), 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/file.rs:181:66
[INFO] [stdout]     |
[INFO] [stdout] 181 |             ReaderState::Err(e, _) => io::Error::new(e.kind(), e.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/file.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         mem::replace(self, s);
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "0e8a6d4fc5fc5d86c4ba4713ffb13fbe4bd3948eaa4eb31aa1a207d84781622c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e8a6d4fc5fc5d86c4ba4713ffb13fbe4bd3948eaa4eb31aa1a207d84781622c", kill_on_drop: false }`
[INFO] [stdout] 0e8a6d4fc5fc5d86c4ba4713ffb13fbe4bd3948eaa4eb31aa1a207d84781622c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a471ac91c84dcf3c7d08b0d88ecee65197df9e867b548e6293da332f6b9ee885
[INFO] running `Command { std: "docker" "start" "-a" "a471ac91c84dcf3c7d08b0d88ecee65197df9e867b548e6293da332f6b9ee885", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/file.rs:167:51
[INFO] [stdout]     |
[INFO] [stdout] 167 |             return Err(io::Error::new(e.kind(), e.description()));
[INFO] [stdout]     |                                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling concat-reader v0.1.0 (/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/file.rs:181:66
[INFO] [stdout]     |
[INFO] [stdout] 181 |             ReaderState::Err(e, _) => io::Error::new(e.kind(), e.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/file.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         mem::replace(self, s);
[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: 3 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/file.rs:167:51
[INFO] [stdout]     |
[INFO] [stdout] 167 |             return Err(io::Error::new(e.kind(), 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/file.rs:181:66
[INFO] [stdout]     |
[INFO] [stdout] 181 |             ReaderState::Err(e, _) => io::Error::new(e.kind(), e.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/file.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         mem::replace(self, s);
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "a471ac91c84dcf3c7d08b0d88ecee65197df9e867b548e6293da332f6b9ee885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a471ac91c84dcf3c7d08b0d88ecee65197df9e867b548e6293da332f6b9ee885", kill_on_drop: false }`
[INFO] [stdout] a471ac91c84dcf3c7d08b0d88ecee65197df9e867b548e6293da332f6b9ee885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84b49b54f2715b431bc3123ae9bda373d532d7e0dd3a92782a549c5ec05f27fa
[INFO] running `Command { std: "docker" "start" "-a" "84b49b54f2715b431bc3123ae9bda373d532d7e0dd3a92782a549c5ec05f27fa", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/file.rs:167:51
[INFO] [stderr]     |
[INFO] [stderr] 167 |             return Err(io::Error::new(e.kind(), 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/file.rs:181:66
[INFO] [stderr]     |
[INFO] [stderr] 181 |             ReaderState::Err(e, _) => io::Error::new(e.kind(), e.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/file.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         mem::replace(self, s);
[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: `concat-reader` (lib) generated 3 warnings
[INFO] [stderr] warning: `concat-reader` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concat_reader-ba066e35ade04951)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test file::tests::fails_on_file_error ... ok
[INFO] [stdout] test file::tests::fails_on_file_error2 ... ok
[INFO] [stdout] test file::tests::can_skip_and_continue ... ok
[INFO] [stdout] test file::tests::can_debug_print ... ok
[INFO] [stdout] test file::tests::init_next_reader_when_current_is_eof ... ok
[INFO] [stdout] test file::tests::reads_from_multiple_files ... ok
[INFO] [stdout] test read::tests::reads_from_multiple_readers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concat-reader
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/file.rs - file::FileConcatReader (line 28) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 4) - compile ... ok
[INFO] [stdout] test src/lib.rs - FileConcatRead::file_path (line 147) - compile ... ok
[INFO] [stdout] test src/lib.rs - concat_path (line 59) - compile ... ok
[INFO] [stdout] test src/read.rs - read::ConcatReader (line 11) - compile ... ok
[INFO] [stdout] test src/lib.rs - FileConcatRead (line 129) - compile ... ok
[INFO] [stdout] test src/file.rs - file::FileConcatReader<I>::new (line 70) ... ok
[INFO] [stdout] test src/lib.rs - concat (line 39) ... ok
[INFO] [stdout] test src/lib.rs - ConcatRead::skip (line 95) ... ok
[INFO] [stdout] test src/read.rs - read::ConcatReader<I>::new (line 51) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.94s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84b49b54f2715b431bc3123ae9bda373d532d7e0dd3a92782a549c5ec05f27fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b49b54f2715b431bc3123ae9bda373d532d7e0dd3a92782a549c5ec05f27fa", kill_on_drop: false }`
[INFO] [stdout] 84b49b54f2715b431bc3123ae9bda373d532d7e0dd3a92782a549c5ec05f27fa