[INFO] fetching crate sconcat 0.2.1...
[INFO] testing sconcat-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sconcat 0.2.1 into /workspace/builds/worker-92/source
[INFO] validating manifest of crates.io crate sconcat 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sconcat 0.2.1
[INFO] finished tweaking crates.io crate sconcat 0.2.1
[INFO] tweaked toml for crates.io crate sconcat 0.2.1 written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded numtoa v0.0.7
[INFO] [stderr]   Downloaded fast_fmt v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec8e302ae69b4aff4a0c8dc99b38df70121e626b81f590e0000a3e07cf3a9079
[INFO] running `Command { std: "docker" "start" "-a" "ec8e302ae69b4aff4a0c8dc99b38df70121e626b81f590e0000a3e07cf3a9079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec8e302ae69b4aff4a0c8dc99b38df70121e626b81f590e0000a3e07cf3a9079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec8e302ae69b4aff4a0c8dc99b38df70121e626b81f590e0000a3e07cf3a9079", kill_on_drop: false }`
[INFO] [stdout] ec8e302ae69b4aff4a0c8dc99b38df70121e626b81f590e0000a3e07cf3a9079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fa7a1f81e3e0e64d68307e1faee2b821cd5cda840eb00d6d810e9960e8a1a78
[INFO] running `Command { std: "docker" "start" "-a" "7fa7a1f81e3e0e64d68307e1faee2b821cd5cda840eb00d6d810e9960e8a1a78", kill_on_drop: false }`
[INFO] [stderr]    Compiling sconcat v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "7fa7a1f81e3e0e64d68307e1faee2b821cd5cda840eb00d6d810e9960e8a1a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa7a1f81e3e0e64d68307e1faee2b821cd5cda840eb00d6d810e9960e8a1a78", kill_on_drop: false }`
[INFO] [stdout] 7fa7a1f81e3e0e64d68307e1faee2b821cd5cda840eb00d6d810e9960e8a1a78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 901a253fe58b4397203a2e530ba8b6fa1c2026872f5b0fe0ddd686394ee5c5a0
[INFO] running `Command { std: "docker" "start" "-a" "901a253fe58b4397203a2e530ba8b6fa1c2026872f5b0fe0ddd686394ee5c5a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling sconcat v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "901a253fe58b4397203a2e530ba8b6fa1c2026872f5b0fe0ddd686394ee5c5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "901a253fe58b4397203a2e530ba8b6fa1c2026872f5b0fe0ddd686394ee5c5a0", kill_on_drop: false }`
[INFO] [stdout] 901a253fe58b4397203a2e530ba8b6fa1c2026872f5b0fe0ddd686394ee5c5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b662dffb8bb8afe34f55ca2ef51dc71f65b96b9b42fa01a05bdff7ddb53cd787
[INFO] running `Command { std: "docker" "start" "-a" "b662dffb8bb8afe34f55ca2ef51dc71f65b96b9b42fa01a05bdff7ddb53cd787", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sconcat-5d31fff6eea2bce9)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test cat::tests::formatting ... ok
[INFO] [stdout] test cat::tests::it_works ... ok
[INFO] [stdout] test tests::readme_example_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sconcat
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 77) ... ok
[INFO] [stdout] test src/cat.rs - cat::Cat (line 264) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 46) ... ok
[INFO] [stdout] test src/lib.rs - (line 59) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b662dffb8bb8afe34f55ca2ef51dc71f65b96b9b42fa01a05bdff7ddb53cd787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b662dffb8bb8afe34f55ca2ef51dc71f65b96b9b42fa01a05bdff7ddb53cd787", kill_on_drop: false }`
[INFO] [stdout] b662dffb8bb8afe34f55ca2ef51dc71f65b96b9b42fa01a05bdff7ddb53cd787