[INFO] fetching crate swap-n 0.1.1...
[INFO] testing swap-n-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate swap-n 0.1.1 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate swap-n 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate swap-n 0.1.1
[INFO] finished tweaking crates.io crate swap-n 0.1.1
[INFO] tweaked toml for crates.io crate swap-n 0.1.1 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6915ee32401ff9fe33ae3ab55c6899d2b1a4aaa9887fa6a22733f9683bada490
[INFO] running `Command { std: "docker" "start" "-a" "6915ee32401ff9fe33ae3ab55c6899d2b1a4aaa9887fa6a22733f9683bada490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6915ee32401ff9fe33ae3ab55c6899d2b1a4aaa9887fa6a22733f9683bada490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6915ee32401ff9fe33ae3ab55c6899d2b1a4aaa9887fa6a22733f9683bada490", kill_on_drop: false }`
[INFO] [stdout] 6915ee32401ff9fe33ae3ab55c6899d2b1a4aaa9887fa6a22733f9683bada490
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 625f6e05ab74a9d2deb8bfe5041c423d962f48f27a931745a81178cf505f9ff2
[INFO] running `Command { std: "docker" "start" "-a" "625f6e05ab74a9d2deb8bfe5041c423d962f48f27a931745a81178cf505f9ff2", kill_on_drop: false }`
[INFO] [stderr]    Compiling swap-n v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "625f6e05ab74a9d2deb8bfe5041c423d962f48f27a931745a81178cf505f9ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625f6e05ab74a9d2deb8bfe5041c423d962f48f27a931745a81178cf505f9ff2", kill_on_drop: false }`
[INFO] [stdout] 625f6e05ab74a9d2deb8bfe5041c423d962f48f27a931745a81178cf505f9ff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b3d66e9d11268c640080f47dead59bb580323bc5fdce29c5e1783ed81b3f3fc
[INFO] running `Command { std: "docker" "start" "-a" "1b3d66e9d11268c640080f47dead59bb580323bc5fdce29c5e1783ed81b3f3fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling swap-n v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/swap_n-b3eea9eb037bf158)
[INFO] running `Command { std: "docker" "inspect" "1b3d66e9d11268c640080f47dead59bb580323bc5fdce29c5e1783ed81b3f3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b3d66e9d11268c640080f47dead59bb580323bc5fdce29c5e1783ed81b3f3fc", kill_on_drop: false }`
[INFO] [stdout] 1b3d66e9d11268c640080f47dead59bb580323bc5fdce29c5e1783ed81b3f3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 62c9ecca74c69231afd08b5ea99468e3760a2a24db303c15d024ab82da7ac2db
[INFO] running `Command { std: "docker" "start" "-a" "62c9ecca74c69231afd08b5ea99468e3760a2a24db303c15d024ab82da7ac2db", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/swap_n-b3eea9eb037bf158)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::four_elements ... ok
[INFO] [stdout] test tests::most_basic_functionality ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests swap-n
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 22) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 29) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 38) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "62c9ecca74c69231afd08b5ea99468e3760a2a24db303c15d024ab82da7ac2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c9ecca74c69231afd08b5ea99468e3760a2a24db303c15d024ab82da7ac2db", kill_on_drop: false }`
[INFO] [stdout] 62c9ecca74c69231afd08b5ea99468e3760a2a24db303c15d024ab82da7ac2db