[INFO] fetching crate rust_learner_j 0.1.0...
[INFO] testing rust_learner_j-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rust_learner_j 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rust_learner_j 0.1.0
[INFO] finished tweaking crates.io crate rust_learner_j 0.1.0
[INFO] tweaked toml for crates.io crate rust_learner_j 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_learner_j 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust_learner_j 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a25e1eff3f876ad325c86acb7df83c369ffff7a0982d2d2312bf9a02be41079
[INFO] running `Command { std: "docker" "start" "-a" "6a25e1eff3f876ad325c86acb7df83c369ffff7a0982d2d2312bf9a02be41079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a25e1eff3f876ad325c86acb7df83c369ffff7a0982d2d2312bf9a02be41079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a25e1eff3f876ad325c86acb7df83c369ffff7a0982d2d2312bf9a02be41079", kill_on_drop: false }`
[INFO] [stdout] 6a25e1eff3f876ad325c86acb7df83c369ffff7a0982d2d2312bf9a02be41079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 019250eb93cee121357613758255a1347c0d1cd0d1d255ba9ae625a4beaf31d5
[INFO] running `Command { std: "docker" "start" "-a" "019250eb93cee121357613758255a1347c0d1cd0d1d255ba9ae625a4beaf31d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learner_j v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "019250eb93cee121357613758255a1347c0d1cd0d1d255ba9ae625a4beaf31d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "019250eb93cee121357613758255a1347c0d1cd0d1d255ba9ae625a4beaf31d5", kill_on_drop: false }`
[INFO] [stdout] 019250eb93cee121357613758255a1347c0d1cd0d1d255ba9ae625a4beaf31d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e291524ebed127ef753a2e6e573c04df86847e5b31fbfc394c38988a572f992
[INFO] running `Command { std: "docker" "start" "-a" "4e291524ebed127ef753a2e6e573c04df86847e5b31fbfc394c38988a572f992", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learner_j v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "4e291524ebed127ef753a2e6e573c04df86847e5b31fbfc394c38988a572f992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e291524ebed127ef753a2e6e573c04df86847e5b31fbfc394c38988a572f992", kill_on_drop: false }`
[INFO] [stdout] 4e291524ebed127ef753a2e6e573c04df86847e5b31fbfc394c38988a572f992
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1cb0520e749203dbd38097e22fb03366605ca167e0a65a9e768c9e634ee9fd8f
[INFO] running `Command { std: "docker" "start" "-a" "1cb0520e749203dbd38097e22fb03366605ca167e0a65a9e768c9e634ee9fd8f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learner_j-c7239201971d0317)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cb0520e749203dbd38097e22fb03366605ca167e0a65a9e768c9e634ee9fd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cb0520e749203dbd38097e22fb03366605ca167e0a65a9e768c9e634ee9fd8f", kill_on_drop: false }`
[INFO] [stdout] 1cb0520e749203dbd38097e22fb03366605ca167e0a65a9e768c9e634ee9fd8f