[INFO] fetching crate std-logger 0.3.6...
[INFO] testing std-logger-0.3.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate std-logger 0.3.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate std-logger 0.3.6 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate std-logger 0.3.6
[INFO] finished tweaking crates.io crate std-logger 0.3.6
[INFO] tweaked toml for crates.io crate std-logger 0.3.6 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate std-logger 0.3.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 698f19ef5876877aaac2a9ad85bccd27a31859c0c2e129003a94bedab74230da
[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" "698f19ef5876877aaac2a9ad85bccd27a31859c0c2e129003a94bedab74230da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "698f19ef5876877aaac2a9ad85bccd27a31859c0c2e129003a94bedab74230da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "698f19ef5876877aaac2a9ad85bccd27a31859c0c2e129003a94bedab74230da", kill_on_drop: false }`
[INFO] [stdout] 698f19ef5876877aaac2a9ad85bccd27a31859c0c2e129003a94bedab74230da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5be17c0f6a1b1678edc4c90a57920432115756f0cb49f9c85d95770159cb45e2
[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" "5be17c0f6a1b1678edc4c90a57920432115756f0cb49f9c85d95770159cb45e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling backtrace v0.3.44
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling log-panics v2.0.0
[INFO] [stderr]    Compiling std-logger v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "5be17c0f6a1b1678edc4c90a57920432115756f0cb49f9c85d95770159cb45e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5be17c0f6a1b1678edc4c90a57920432115756f0cb49f9c85d95770159cb45e2", kill_on_drop: false }`
[INFO] [stdout] 5be17c0f6a1b1678edc4c90a57920432115756f0cb49f9c85d95770159cb45e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71477f14622e7b09f9fc5a5b99a40f9ffcf7ac6ca0fc9c06305f36130cc6bd85
[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" "71477f14622e7b09f9fc5a5b99a40f9ffcf7ac6ca0fc9c06305f36130cc6bd85", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling bstr v0.2.11
[INFO] [stderr]    Compiling csv-core v0.1.9
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling tinytemplate v1.0.3
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling std-logger v0.3.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `tests`
[INFO] [stdout]    --> src/lib.rs:221:1
[INFO] [stdout]     |
[INFO] [stdout] 221 | mod tests;
[INFO] [stdout]     | ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: to create the module `tests`, create file "src/tests.rs"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LOG_OUTPUT_INDEX`, `LOG_OUTPUT`
[INFO] [stdout]    --> src/lib.rs:419:46
[INFO] [stdout]     |
[INFO] [stdout] 419 | use self::test_instruments::{stderr, stdout, LOG_OUTPUT, LOG_OUTPUT_INDEX};
[INFO] [stdout]     |                                              ^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `std-logger`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "71477f14622e7b09f9fc5a5b99a40f9ffcf7ac6ca0fc9c06305f36130cc6bd85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71477f14622e7b09f9fc5a5b99a40f9ffcf7ac6ca0fc9c06305f36130cc6bd85", kill_on_drop: false }`
[INFO] [stdout] 71477f14622e7b09f9fc5a5b99a40f9ffcf7ac6ca0fc9c06305f36130cc6bd85