[INFO] fetching crate residua-mutf8 0.5.0...
[INFO] testing residua-mutf8-0.5.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate residua-mutf8 0.5.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate residua-mutf8 0.5.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate residua-mutf8 0.5.0
[INFO] finished tweaking crates.io crate residua-mutf8 0.5.0
[INFO] tweaked toml for crates.io crate residua-mutf8 0.5.0 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c440b538ff88d2f85ea7b10d2f666d2cb2837602952855c88c054207dd65695e
[INFO] running `Command { std: "docker" "start" "-a" "c440b538ff88d2f85ea7b10d2f666d2cb2837602952855c88c054207dd65695e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c440b538ff88d2f85ea7b10d2f666d2cb2837602952855c88c054207dd65695e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c440b538ff88d2f85ea7b10d2f666d2cb2837602952855c88c054207dd65695e", kill_on_drop: false }`
[INFO] [stdout] c440b538ff88d2f85ea7b10d2f666d2cb2837602952855c88c054207dd65695e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d355bb5e63b0193ebe0ceeb643f804a562b18da4bc005e1fec32f8165edbc835
[INFO] running `Command { std: "docker" "start" "-a" "d355bb5e63b0193ebe0ceeb643f804a562b18da4bc005e1fec32f8165edbc835", kill_on_drop: false }`
[INFO] [stderr]    Compiling residua-cesu8 v0.6.0
[INFO] [stderr]    Compiling residua-mutf8 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "d355bb5e63b0193ebe0ceeb643f804a562b18da4bc005e1fec32f8165edbc835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d355bb5e63b0193ebe0ceeb643f804a562b18da4bc005e1fec32f8165edbc835", kill_on_drop: false }`
[INFO] [stdout] d355bb5e63b0193ebe0ceeb643f804a562b18da4bc005e1fec32f8165edbc835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96d378a05a946a083d69f7032daa0b67736b271c46b02088858b79fa2d060333
[INFO] running `Command { std: "docker" "start" "-a" "96d378a05a946a083d69f7032daa0b67736b271c46b02088858b79fa2d060333", kill_on_drop: false }`
[INFO] [stderr]    Compiling residua-mutf8 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "96d378a05a946a083d69f7032daa0b67736b271c46b02088858b79fa2d060333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d378a05a946a083d69f7032daa0b67736b271c46b02088858b79fa2d060333", kill_on_drop: false }`
[INFO] [stdout] 96d378a05a946a083d69f7032daa0b67736b271c46b02088858b79fa2d060333
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97e20ddbac266adf616c27ae4e517ccf74457986e2b319f7307a7837c88dc0d2
[INFO] running `Command { std: "docker" "start" "-a" "97e20ddbac266adf616c27ae4e517ccf74457986e2b319f7307a7837c88dc0d2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mutf8-2bcba526ec21e7e2)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutf8
[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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - is_valid_mutf8 (line 188) ... ok
[INFO] [stdout] test src/lib.rs - to_mutf8 (line 122) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - from_mutf8 (line 55) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97e20ddbac266adf616c27ae4e517ccf74457986e2b319f7307a7837c88dc0d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e20ddbac266adf616c27ae4e517ccf74457986e2b319f7307a7837c88dc0d2", kill_on_drop: false }`
[INFO] [stdout] 97e20ddbac266adf616c27ae4e517ccf74457986e2b319f7307a7837c88dc0d2