[INFO] fetching crate concat-reader 0.1.0...
[INFO] testing concat-reader-0.1.0 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate concat-reader 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate concat-reader 0.1.0 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b7b1578eed7355344ebd1fbea885ef9272d1ef337b7be45836fd1a2d09c632b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8b7b1578eed7355344ebd1fbea885ef9272d1ef337b7be45836fd1a2d09c632b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b7b1578eed7355344ebd1fbea885ef9272d1ef337b7be45836fd1a2d09c632b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7b1578eed7355344ebd1fbea885ef9272d1ef337b7be45836fd1a2d09c632b", kill_on_drop: false }`
[INFO] [stdout] 8b7b1578eed7355344ebd1fbea885ef9272d1ef337b7be45836fd1a2d09c632b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 565d6c37fd9c35a27394eb297a2584137b72c12e8c84a44446ee7b0ee0bc5908
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "565d6c37fd9c35a27394eb297a2584137b72c12e8c84a44446ee7b0ee0bc5908", 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 0.41s
[INFO] running `Command { std: "docker" "inspect" "565d6c37fd9c35a27394eb297a2584137b72c12e8c84a44446ee7b0ee0bc5908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "565d6c37fd9c35a27394eb297a2584137b72c12e8c84a44446ee7b0ee0bc5908", kill_on_drop: false }`
[INFO] [stdout] 565d6c37fd9c35a27394eb297a2584137b72c12e8c84a44446ee7b0ee0bc5908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2920304260fe69b96a47a6dd132520ae02d0be6cee98d9344e3b8a40cc9ba54
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b2920304260fe69b96a47a6dd132520ae02d0be6cee98d9344e3b8a40cc9ba54", 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 1.44s
[INFO] running `Command { std: "docker" "inspect" "b2920304260fe69b96a47a6dd132520ae02d0be6cee98d9344e3b8a40cc9ba54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2920304260fe69b96a47a6dd132520ae02d0be6cee98d9344e3b8a40cc9ba54", kill_on_drop: false }`
[INFO] [stdout] b2920304260fe69b96a47a6dd132520ae02d0be6cee98d9344e3b8a40cc9ba54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 898a3e055791bf262c6621d0cd256cd7f41a936be3c13b00ead8198f5589100c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "898a3e055791bf262c6621d0cd256cd7f41a936be3c13b00ead8198f5589100c", 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: 3 warnings emitted
[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: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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/concat_reader-61b064c0027d86f7
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test file::tests::fails_on_file_error2 ... ok
[INFO] [stdout] test file::tests::fails_on_file_error ... ok
[INFO] [stdout] test file::tests::reads_from_multiple_files ... ok
[INFO] [stdout] test file::tests::can_skip_and_continue ... ok
[INFO] [stdout] test file::tests::init_next_reader_when_current_is_eof ... ok
[INFO] [stdout] test file::tests::can_debug_print ... 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
[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) ... ok
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] test src/lib.rs - concat_path (line 59) ... ok
[INFO] [stdout] test src/read.rs - read::ConcatReader (line 11) ... ok
[INFO] [stdout] test src/lib.rs - FileConcatRead (line 129) ... ok
[INFO] [stdout] test src/lib.rs - FileConcatRead::file_path (line 147) ... ok
[INFO] [stdout] test src/file.rs - file::FileConcatReader<I>::new (line 70) ... ok
[INFO] [stdout] test src/read.rs - read::ConcatReader<I>::new (line 51) ... ok
[INFO] [stdout] test src/lib.rs - ConcatRead::skip (line 95) ... ok
[INFO] [stdout] test src/lib.rs - concat (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "898a3e055791bf262c6621d0cd256cd7f41a936be3c13b00ead8198f5589100c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "898a3e055791bf262c6621d0cd256cd7f41a936be3c13b00ead8198f5589100c", kill_on_drop: false }`
[INFO] [stdout] 898a3e055791bf262c6621d0cd256cd7f41a936be3c13b00ead8198f5589100c