[INFO] cloning repository https://github.com/PRL-PRG/method-chaining
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PRL-PRG/method-chaining" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPRL-PRG%2Fmethod-chaining", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPRL-PRG%2Fmethod-chaining'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1bcb77d81d1e634d493967cdaec1b366d23f745
[INFO] testing PRL-PRG/method-chaining against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPRL-PRG%2Fmethod-chaining" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PRL-PRG/method-chaining on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PRL-PRG/method-chaining
[INFO] finished tweaking git repo https://github.com/PRL-PRG/method-chaining
[INFO] tweaked toml for git repo https://github.com/PRL-PRG/method-chaining written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/PRL-PRG/method-chaining already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.27
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded anyhow v1.0.42
[INFO] [stderr]   Downloaded clap_derive v3.0.0-beta.2
[INFO] [stderr]   Downloaded bstr v0.2.16
[INFO] [stderr]   Downloaded clap v3.0.0-beta.2
[INFO] [stderr]   Downloaded textwrap v0.12.1
[INFO] [stderr]   Downloaded os_str_bytes v2.4.0
[INFO] [stderr]   Downloaded heck v0.3.3
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 518e67305a6e0e0350cf63c972eb9d10005fbc0a5948e675bf02950ec11cccb9
[INFO] running `Command { std: "docker" "start" "-a" "518e67305a6e0e0350cf63c972eb9d10005fbc0a5948e675bf02950ec11cccb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "518e67305a6e0e0350cf63c972eb9d10005fbc0a5948e675bf02950ec11cccb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "518e67305a6e0e0350cf63c972eb9d10005fbc0a5948e675bf02950ec11cccb9", kill_on_drop: false }`
[INFO] [stdout] 518e67305a6e0e0350cf63c972eb9d10005fbc0a5948e675bf02950ec11cccb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a5d8dd506fcdbe5662c548cbf1b3cad23167595980e7892872de4ef631dcae6
[INFO] running `Command { std: "docker" "start" "-a" "6a5d8dd506fcdbe5662c548cbf1b3cad23167595980e7892872de4ef631dcae6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling clap v3.0.0-beta.2
[INFO] [stderr]    Compiling method-chains v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/lib.rs:222:29
[INFO] [stdout]     |
[INFO] [stdout] 222 |         () => { counter += 1; }
[INFO] [stdout]     |                             ^
[INFO] [stdout] ...
[INFO] [stdout] 258 |             (State::Potential, Token::OpenParen)    => { recurse!(); state = State::ParenEnd; method_found!() }
[INFO] [stdout]     |                                                                                               --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `method_found`
[INFO] [stdout]     = note: this warning originates in the macro `method_found` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.66s
[INFO] running `Command { std: "docker" "inspect" "6a5d8dd506fcdbe5662c548cbf1b3cad23167595980e7892872de4ef631dcae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5d8dd506fcdbe5662c548cbf1b3cad23167595980e7892872de4ef631dcae6", kill_on_drop: false }`
[INFO] [stdout] 6a5d8dd506fcdbe5662c548cbf1b3cad23167595980e7892872de4ef631dcae6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de426f97bd1615ebfbdaa37aca7447bbfade530d92ba8315de85ea5d425e3781
[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" "de426f97bd1615ebfbdaa37aca7447bbfade530d92ba8315de85ea5d425e3781", kill_on_drop: false }`
[INFO] [stderr]    Compiling method-chains v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/lib.rs:222:29
[INFO] [stdout]     |
[INFO] [stdout] 222 |         () => { counter += 1; }
[INFO] [stdout]     |                             ^
[INFO] [stdout] ...
[INFO] [stdout] 258 |             (State::Potential, Token::OpenParen)    => { recurse!(); state = State::ParenEnd; method_found!() }
[INFO] [stdout]     |                                                                                               --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `method_found`
[INFO] [stdout]     = note: this warning originates in the macro `method_found` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/lib.rs:222:29
[INFO] [stdout]     |
[INFO] [stdout] 222 |         () => { counter += 1; }
[INFO] [stdout]     |                             ^
[INFO] [stdout] ...
[INFO] [stdout] 258 |             (State::Potential, Token::OpenParen)    => { recurse!(); state = State::ParenEnd; method_found!() }
[INFO] [stdout]     |                                                                                               --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `method_found`
[INFO] [stdout]     = note: this warning originates in the macro `method_found` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "de426f97bd1615ebfbdaa37aca7447bbfade530d92ba8315de85ea5d425e3781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de426f97bd1615ebfbdaa37aca7447bbfade530d92ba8315de85ea5d425e3781", kill_on_drop: false }`
[INFO] [stdout] de426f97bd1615ebfbdaa37aca7447bbfade530d92ba8315de85ea5d425e3781
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] acc041d219e261c63a125270a188404e99fab95e1aab89e6811c74388e527b57
[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" "acc041d219e261c63a125270a188404e99fab95e1aab89e6811c74388e527b57", kill_on_drop: false }`
[INFO] [stderr] warning: trailing semicolon in macro used in expression position
[INFO] [stderr]    --> src/lib.rs:222:29
[INFO] [stderr]     |
[INFO] [stderr] 222 |         () => { counter += 1; }
[INFO] [stderr]     |                             ^
[INFO] [stderr] ...
[INFO] [stderr] 258 |             (State::Potential, Token::OpenParen)    => { recurse!(); state = State::ParenEnd; method_found!() }
[INFO] [stderr]     |                                                                                               --------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stderr]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stderr]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `method_found`
[INFO] [stderr]     = note: this warning originates in the macro `method_found` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `method-chains` (lib) generated 1 warning
[INFO] [stderr] warning: `method-chains` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/method_chains-ee8fe4a4ca6d0045)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::test_chain2 ... ok
[INFO] [stdout] test tests::test_chain1 ... ok
[INFO] [stdout] test tests::test_chain3 ... ok
[INFO] [stdout] test tests::test_chain4 ... ok
[INFO] [stdout] test tests::test_chain5 ... ok
[INFO] [stdout] test tests::test_chain6 ... ok
[INFO] [stdout] test tests::test_tokenizer ... ok
[INFO] [stdout] test tests::test_comment_removal ... ok
[INFO] [stdout] test tests::test_chain7 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/method_chains-1f04ee3d106d01d4)
[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] [stderr]    Doc-tests method-chains
[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" "acc041d219e261c63a125270a188404e99fab95e1aab89e6811c74388e527b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acc041d219e261c63a125270a188404e99fab95e1aab89e6811c74388e527b57", kill_on_drop: false }`
[INFO] [stdout] acc041d219e261c63a125270a188404e99fab95e1aab89e6811c74388e527b57