[INFO] cloning repository https://github.com/Wilfred/sooty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wilfred/sooty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilfred%2Fsooty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilfred%2Fsooty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f58fbecffbb7973903da328e77296ba7364b4122
[INFO] testing Wilfred/sooty against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilfred%2Fsooty" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Wilfred/sooty on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Wilfred/sooty
[INFO] finished tweaking git repo https://github.com/Wilfred/sooty
[INFO] tweaked toml for git repo https://github.com/Wilfred/sooty written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Wilfred/sooty already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02283684c2e05c248e4f56ffa70c145625f22dbd8eee17dff15a35275826fbcc
[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" "02283684c2e05c248e4f56ffa70c145625f22dbd8eee17dff15a35275826fbcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02283684c2e05c248e4f56ffa70c145625f22dbd8eee17dff15a35275826fbcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02283684c2e05c248e4f56ffa70c145625f22dbd8eee17dff15a35275826fbcc", kill_on_drop: false }`
[INFO] [stdout] 02283684c2e05c248e4f56ffa70c145625f22dbd8eee17dff15a35275826fbcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 8bf18230f3a4b6a24346b521d9234df528be9824d48acecccf296ea65ce6790a
[INFO] running `Command { std: "docker" "start" "-a" "8bf18230f3a4b6a24346b521d9234df528be9824d48acecccf296ea65ce6790a", kill_on_drop: false }`
[INFO] [stderr]    Compiling sooty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(mut parent_list) => {
[INFO] [stdout]    |                          ----^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "8bf18230f3a4b6a24346b521d9234df528be9824d48acecccf296ea65ce6790a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf18230f3a4b6a24346b521d9234df528be9824d48acecccf296ea65ce6790a", kill_on_drop: false }`
[INFO] [stdout] 8bf18230f3a4b6a24346b521d9234df528be9824d48acecccf296ea65ce6790a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] af30d8dfa9f8f56d36ee1f9f553c5b7bcf83cfeaadd06bdefd56c2f82811eabe
[INFO] running `Command { std: "docker" "start" "-a" "af30d8dfa9f8f56d36ee1f9f553c5b7bcf83cfeaadd06bdefd56c2f82811eabe", kill_on_drop: false }`
[INFO] [stderr]    Compiling sooty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(mut parent_list) => {
[INFO] [stdout]    |                          ----^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "af30d8dfa9f8f56d36ee1f9f553c5b7bcf83cfeaadd06bdefd56c2f82811eabe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af30d8dfa9f8f56d36ee1f9f553c5b7bcf83cfeaadd06bdefd56c2f82811eabe", kill_on_drop: false }`
[INFO] [stdout] af30d8dfa9f8f56d36ee1f9f553c5b7bcf83cfeaadd06bdefd56c2f82811eabe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ba2d412d1aeb05407b5083ae60f96e5e0206e3b8b609013272eeb88bba662d95
[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" "ba2d412d1aeb05407b5083ae60f96e5e0206e3b8b609013272eeb88bba662d95", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 8 tests
[INFO] [stderr]   --> src/lexer.rs:93:26
[INFO] [stdout] test lexer::test_lex_left_paren_and_number ... ok
[INFO] [stderr]    |
[INFO] [stdout] test lexer::test_lex_single_number ... ok
[INFO] [stderr] 93 |                     Some(mut parent_list) => {
[INFO] [stdout] test lexer::test_lex_right_paren ... ok
[INFO] [stderr]    |                          ----^^^^^^^^^^^
[INFO] [stdout] test lexer::test_lex_left_paren ... ok
[INFO] [stderr]    |                          |
[INFO] [stdout] test lexer::test_parse_empty ... ok
[INFO] [stderr]    |                          help: remove this `mut`
[INFO] [stdout] test lexer::test_parse_unbalanced_left ... ok
[INFO] [stderr]    |
[INFO] [stdout] test lexer::test_parse_unbalanced_right ... ok
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] test lexer::test_lex_multiple_numbers ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sooty-bde7cc6c9892a1c6
[INFO] running `Command { std: "docker" "inspect" "ba2d412d1aeb05407b5083ae60f96e5e0206e3b8b609013272eeb88bba662d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba2d412d1aeb05407b5083ae60f96e5e0206e3b8b609013272eeb88bba662d95", kill_on_drop: false }`
[INFO] [stdout] ba2d412d1aeb05407b5083ae60f96e5e0206e3b8b609013272eeb88bba662d95