[INFO] fetching crate map_vec 0.6.0...
[INFO] checking map_vec-0.6.0 against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] extracting crate map_vec 0.6.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate map_vec 0.6.0 on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate map_vec 0.6.0
[INFO] finished tweaking crates.io crate map_vec 0.6.0
[INFO] tweaked toml for crates.io crate map_vec 0.6.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddeb0bfda61992ca3e5e3acae0f5dc68701abf2f6dc9bbcb6e750936bd59db60
[INFO] running `Command { std: "docker" "start" "-a" "ddeb0bfda61992ca3e5e3acae0f5dc68701abf2f6dc9bbcb6e750936bd59db60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddeb0bfda61992ca3e5e3acae0f5dc68701abf2f6dc9bbcb6e750936bd59db60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddeb0bfda61992ca3e5e3acae0f5dc68701abf2f6dc9bbcb6e750936bd59db60", kill_on_drop: false }`
[INFO] [stdout] ddeb0bfda61992ca3e5e3acae0f5dc68701abf2f6dc9bbcb6e750936bd59db60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdad1782d4032a4a8f32c37eac1dda98c528127321c35dd230646f9b80c03bd9
[INFO] running `Command { std: "docker" "start" "-a" "cdad1782d4032a4a8f32c37eac1dda98c528127321c35dd230646f9b80c03bd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_json v1.0.135
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking map_vec v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] error: this conversion is useless `Vec<(char, u32)>` to `Vec<(char, u32)>`
[INFO] [stdout]     --> src/map.rs:1610:35
[INFO] [stdout]      |
[INFO] [stdout] 1610 |         let _: Vec<(char, u32)> = vec![('a', 1)].into();
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `Vec<()>` to `Vec<()>`
[INFO] [stdout]     --> src/set.rs:1099:26
[INFO] [stdout]      |
[INFO] [stdout] 1099 |         let _: Vec<()> = vec![()].into();
[INFO] [stdout]      |                          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `map_vec` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cdad1782d4032a4a8f32c37eac1dda98c528127321c35dd230646f9b80c03bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdad1782d4032a4a8f32c37eac1dda98c528127321c35dd230646f9b80c03bd9", kill_on_drop: false }`
[INFO] [stdout] cdad1782d4032a4a8f32c37eac1dda98c528127321c35dd230646f9b80c03bd9