[INFO] fetching crate gnu-ln 0.2.0...
[INFO] testing gnu-ln-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate gnu-ln 0.2.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate gnu-ln 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gnu-ln 0.2.0
[INFO] finished tweaking crates.io crate gnu-ln 0.2.0
[INFO] tweaked toml for crates.io crate gnu-ln 0.2.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dd8281bc3704f8d2dc7ebdc88810c8b93dc60fd78fdcc5e70400f2fe23c32f6
[INFO] running `Command { std: "docker" "start" "-a" "5dd8281bc3704f8d2dc7ebdc88810c8b93dc60fd78fdcc5e70400f2fe23c32f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dd8281bc3704f8d2dc7ebdc88810c8b93dc60fd78fdcc5e70400f2fe23c32f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd8281bc3704f8d2dc7ebdc88810c8b93dc60fd78fdcc5e70400f2fe23c32f6", kill_on_drop: false }`
[INFO] [stdout] 5dd8281bc3704f8d2dc7ebdc88810c8b93dc60fd78fdcc5e70400f2fe23c32f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2c1b072b3088eb551d97e5fadd78e8572c0dd90fa04ca0ff2e81c876cf7a3fb
[INFO] running `Command { std: "docker" "start" "-a" "d2c1b072b3088eb551d97e5fadd78e8572c0dd90fa04ca0ff2e81c876cf7a3fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling gnu-ln v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "d2c1b072b3088eb551d97e5fadd78e8572c0dd90fa04ca0ff2e81c876cf7a3fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2c1b072b3088eb551d97e5fadd78e8572c0dd90fa04ca0ff2e81c876cf7a3fb", kill_on_drop: false }`
[INFO] [stdout] d2c1b072b3088eb551d97e5fadd78e8572c0dd90fa04ca0ff2e81c876cf7a3fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 831adf440cff9a66c7ac4865bbc0c5765eead0127a7e789922c9115c58f330f9
[INFO] running `Command { std: "docker" "start" "-a" "831adf440cff9a66c7ac4865bbc0c5765eead0127a7e789922c9115c58f330f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gnu-ln v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "831adf440cff9a66c7ac4865bbc0c5765eead0127a7e789922c9115c58f330f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "831adf440cff9a66c7ac4865bbc0c5765eead0127a7e789922c9115c58f330f9", kill_on_drop: false }`
[INFO] [stdout] 831adf440cff9a66c7ac4865bbc0c5765eead0127a7e789922c9115c58f330f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ebdad6894d104d47818ee2e34769aac842e429c37eafd20be6396b4f54dc1c53
[INFO] running `Command { std: "docker" "start" "-a" "ebdad6894d104d47818ee2e34769aac842e429c37eafd20be6396b4f54dc1c53", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gnu_ln-dc1faeaa962f5703)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] ln: failed to create symbolic link 'some.txt': Read-only file system
[INFO] [stderr] ln: failed to create symbolic link 'some.txt': Read-only file system
[INFO] [stdout] test tests::test_link_and_unlink ... ok
[INFO] [stderr] unlink: cannot unlink 'some.txt': Read-only file system
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gnu-ln
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "ebdad6894d104d47818ee2e34769aac842e429c37eafd20be6396b4f54dc1c53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebdad6894d104d47818ee2e34769aac842e429c37eafd20be6396b4f54dc1c53", kill_on_drop: false }`
[INFO] [stdout] ebdad6894d104d47818ee2e34769aac842e429c37eafd20be6396b4f54dc1c53