[INFO] fetching crate ds-list 2.1.0...
[INFO] testing ds-list-2.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate ds-list 2.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate ds-list 2.1.0
[INFO] finished tweaking crates.io crate ds-list 2.1.0
[INFO] tweaked toml for crates.io crate ds-list 2.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ds-list 2.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fc800e7b80d513a6e19aeaa00efa1e408e24c367e68db2e157cfd49f77f0f08
[INFO] running `Command { std: "docker" "start" "-a" "0fc800e7b80d513a6e19aeaa00efa1e408e24c367e68db2e157cfd49f77f0f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fc800e7b80d513a6e19aeaa00efa1e408e24c367e68db2e157cfd49f77f0f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc800e7b80d513a6e19aeaa00efa1e408e24c367e68db2e157cfd49f77f0f08", kill_on_drop: false }`
[INFO] [stdout] 0fc800e7b80d513a6e19aeaa00efa1e408e24c367e68db2e157cfd49f77f0f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3354cd775d3a4efe4057ee26b2042778448082e2b400fcb020ce65305e22666
[INFO] running `Command { std: "docker" "start" "-a" "b3354cd775d3a4efe4057ee26b2042778448082e2b400fcb020ce65305e22666", kill_on_drop: false }`
[INFO] [stderr]    Compiling ds-list v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "b3354cd775d3a4efe4057ee26b2042778448082e2b400fcb020ce65305e22666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3354cd775d3a4efe4057ee26b2042778448082e2b400fcb020ce65305e22666", kill_on_drop: false }`
[INFO] [stdout] b3354cd775d3a4efe4057ee26b2042778448082e2b400fcb020ce65305e22666
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8e1079c7a2f1dfff94aa6a817fb34d1b4ba680e623141a420ebad1296f4d51b
[INFO] running `Command { std: "docker" "start" "-a" "a8e1079c7a2f1dfff94aa6a817fb34d1b4ba680e623141a420ebad1296f4d51b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ds-list v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "a8e1079c7a2f1dfff94aa6a817fb34d1b4ba680e623141a420ebad1296f4d51b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e1079c7a2f1dfff94aa6a817fb34d1b4ba680e623141a420ebad1296f4d51b", kill_on_drop: false }`
[INFO] [stdout] a8e1079c7a2f1dfff94aa6a817fb34d1b4ba680e623141a420ebad1296f4d51b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d6de7a5b47598be36864ed469bcd7c5f0af85e483fbb3abf9fd89cb86f6802cb
[INFO] running `Command { std: "docker" "start" "-a" "d6de7a5b47598be36864ed469bcd7c5f0af85e483fbb3abf9fd89cb86f6802cb", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ds_list-09687025f0133a45)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/doubly_linked_list_tests.rs (/opt/rustwide/target/debug/deps/doubly_linked_list_tests-5a838ea6b3ed561c)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running tests/singly_linked_list_tests.rs (/opt/rustwide/target/debug/deps/singly_linked_list_tests-c6c2e203d08d0826)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ds_list
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests_doubly_linked_list::get_non_empty_list_test ... ok
[INFO] [stdout] test tests_doubly_linked_list::empty_list_test ... ok
[INFO] [stdout] test tests_doubly_linked_list::push_front_test ... ok
[INFO] [stdout] test tests_doubly_linked_list::get_empty_list_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test tests_singly_linked_list::empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::get_empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::get_unwrap_test ... ok
[INFO] [stdout] test tests_singly_linked_list::is_sorted_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::pop_back_empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::pop_back_test ... ok
[INFO] [stdout] test tests_singly_linked_list::pop_front_in_non_empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::push_back_test ... ok
[INFO] [stdout] test tests_singly_linked_list::pop_front_in_empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::get_else_test ... ok
[INFO] [stdout] test tests_singly_linked_list::is_sorted_empty_list_test ... ok
[INFO] [stdout] test tests_singly_linked_list::is_sorted_non_empty_list_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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" "d6de7a5b47598be36864ed469bcd7c5f0af85e483fbb3abf9fd89cb86f6802cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6de7a5b47598be36864ed469bcd7c5f0af85e483fbb3abf9fd89cb86f6802cb", kill_on_drop: false }`
[INFO] [stdout] d6de7a5b47598be36864ed469bcd7c5f0af85e483fbb3abf9fd89cb86f6802cb