[INFO] fetching crate rexpect 0.4.0...
[INFO] testing rexpect-0.4.0 against 1.54.0 for beta-1.55-2
[INFO] extracting crate rexpect 0.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate rexpect 0.4.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rexpect 0.4.0
[INFO] finished tweaking crates.io crate rexpect 0.4.0
[INFO] tweaked toml for crates.io crate rexpect 0.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate rexpect 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a153f8f8bf0cf11c8e67e07508ca5c1e1c5ae716313dc7c84f3eb0212806b3ab
[INFO] running `Command { std: "docker" "start" "-a" "a153f8f8bf0cf11c8e67e07508ca5c1e1c5ae716313dc7c84f3eb0212806b3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a153f8f8bf0cf11c8e67e07508ca5c1e1c5ae716313dc7c84f3eb0212806b3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a153f8f8bf0cf11c8e67e07508ca5c1e1c5ae716313dc7c84f3eb0212806b3ab", kill_on_drop: false }`
[INFO] [stdout] a153f8f8bf0cf11c8e67e07508ca5c1e1c5ae716313dc7c84f3eb0212806b3ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d0d00b16d36e89cced056f426f4bc1bb4f49b1a8885debd3b53bd3d2a851a1f5
[INFO] running `Command { std: "docker" "start" "-a" "d0d00b16d36e89cced056f426f4bc1bb4f49b1a8885debd3b53bd3d2a851a1f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling cc v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling regex-syntax v0.6.8
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.14
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling backtrace v0.3.3
[INFO] [stderr]    Compiling rexpect v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.84s
[INFO] running `Command { std: "docker" "inspect" "d0d00b16d36e89cced056f426f4bc1bb4f49b1a8885debd3b53bd3d2a851a1f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0d00b16d36e89cced056f426f4bc1bb4f49b1a8885debd3b53bd3d2a851a1f5", kill_on_drop: false }`
[INFO] [stdout] d0d00b16d36e89cced056f426f4bc1bb4f49b1a8885debd3b53bd3d2a851a1f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b787c6d357e12cf8d1e2db71fa61a68bb833827068546105cfe1b338b769bf69
[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" "b787c6d357e12cf8d1e2db71fa61a68bb833827068546105cfe1b338b769bf69", kill_on_drop: false }`
[INFO] [stderr]    Compiling rexpect v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/session.rs:519:42
[INFO] [stdout]     |
[INFO] [stdout] 519 |                 Err(e) => assert!(false, format!("got error: {}", e)),
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 519 |                 Err(e) => assert!(false, "got error: {}", e),
[INFO] [stdout]     |                                         --                --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.53s
[INFO] running `Command { std: "docker" "inspect" "b787c6d357e12cf8d1e2db71fa61a68bb833827068546105cfe1b338b769bf69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b787c6d357e12cf8d1e2db71fa61a68bb833827068546105cfe1b338b769bf69", kill_on_drop: false }`
[INFO] [stdout] b787c6d357e12cf8d1e2db71fa61a68bb833827068546105cfe1b338b769bf69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19aef6e44306bc1d2584f2d148a57394bb63c81e9451d12ac5b1a02bd329b187
[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" "19aef6e44306bc1d2584f2d148a57394bb63c81e9451d12ac5b1a02bd329b187", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/session.rs:519:42
[INFO] [stderr]     |
[INFO] [stderr] 519 |                 Err(e) => assert!(false, format!("got error: {}", e)),
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 519 |                 Err(e) => assert!(false, "got error: {}", e),
[INFO] [stderr]     |                                         --                --
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rexpect-ab2c1893819221fe)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test session::tests::test_expect_empty_command_error ... ok
[INFO] [stdout] test reader::tests::test_regex2 ... ok
[INFO] [stdout] test session::tests::test_tokenize_command ... ok
[INFO] [stdout] test reader::tests::test_expect_melon ... ok
[INFO] [stdout] test reader::tests::test_try_read ... ok
[INFO] [stdout] test process::tests::test_cat ... ok
[INFO] [stdout] test reader::tests::test_nbytes ... ok
[INFO] [stdout] test reader::tests::test_eof ... ok
[INFO] [stdout] test reader::tests::test_regex ... ok
[INFO] [stdout] test session::tests::test_read_string_before ... ok
[INFO] [stdout] test session::tests::test_read_line ... ok
[INFO] [stdout] test session::tests::test_expect_any ... ok
[INFO] [stdout] test session::tests::test_expect_string ... ok
[INFO] [stdout] test session::tests::test_bash ... ok
[INFO] [stdout] test session::tests::test_bash_control_chars ... ok
[INFO] [stdout] test session::tests::test_expect_eof_timeout ... ok
[INFO] [stdout] test session::tests::test_expect_eof_timeout2 ... ok
[INFO] [stdout] test session::tests::test_kill_timeout ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.35s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rexpect
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 55) - compile ... ok
[INFO] [stdout] test src/process.rs - process::PtyProcess::status (line 156) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 17) - compile ... ok
[INFO] [stdout] test src/session.rs - session::PtySession (line 192) ... ok
[INFO] [stdout] test src/process.rs - process::PtyProcess (line 28) ... ok
[INFO] [stdout] test src/session.rs - session::StreamSession<W>::exp_any (line 147) ... ok
[INFO] [stdout] test src/reader.rs - reader::NBReader::read_until (line 201) ... ok
[INFO] [stdout] test src/session.rs - session::PtyReplSession::execute (line 310) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.83s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "19aef6e44306bc1d2584f2d148a57394bb63c81e9451d12ac5b1a02bd329b187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19aef6e44306bc1d2584f2d148a57394bb63c81e9451d12ac5b1a02bd329b187", kill_on_drop: false }`
[INFO] [stdout] 19aef6e44306bc1d2584f2d148a57394bb63c81e9451d12ac5b1a02bd329b187