[INFO] fetching crate tom 0.0.1...
[INFO] testing tom-0.0.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate tom 0.0.1 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate tom 0.0.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-118/source/.cargo/config
[INFO] started tweaking crates.io crate tom 0.0.1
[INFO] finished tweaking crates.io crate tom 0.0.1
[INFO] tweaked toml for crates.io crate tom 0.0.1 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded failure_derive v0.1.8
[INFO] [stderr]   Downloaded synstructure v0.12.5
[INFO] [stderr]   Downloaded failure v0.1.8
[INFO] [stderr]   Downloaded string-interner v0.6.4
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded m_lexer v0.0.4
[INFO] [stderr]   Downloaded text_unit v0.1.10
[INFO] [stderr]   Downloaded uncover v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42dec835dda6b82df7a0089196c7a598bdac7dbfa55f2cf3e05fd31cacf35a01
[INFO] running `Command { std: "docker" "start" "-a" "42dec835dda6b82df7a0089196c7a598bdac7dbfa55f2cf3e05fd31cacf35a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42dec835dda6b82df7a0089196c7a598bdac7dbfa55f2cf3e05fd31cacf35a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42dec835dda6b82df7a0089196c7a598bdac7dbfa55f2cf3e05fd31cacf35a01", kill_on_drop: false }`
[INFO] [stdout] 42dec835dda6b82df7a0089196c7a598bdac7dbfa55f2cf3e05fd31cacf35a01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc8ca2bb24e4be0af8ff5b61201796437f359bde394527710db859c32329a618
[INFO] running `Command { std: "docker" "start" "-a" "cc8ca2bb24e4be0af8ff5b61201796437f359bde394527710db859c32329a618", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling text_unit v0.1.10
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling uncover v0.1.1
[INFO] [stderr]    Compiling string-interner v0.6.4
[INFO] [stderr]    Compiling m_lexer v0.0.4
[INFO] [stderr]    Compiling tom v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/visitor.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 |     callbacks: Vec<Box<FnMut(&mut C, CstNode, &TomlDoc) + 'c>>,
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut C, CstNode, &TomlDoc) + 'c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` 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 the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visitor.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let cb: Box<FnMut(&mut C, CstNode, &TomlDoc) + 'c> =
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut C, CstNode, &TomlDoc) + 'c`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:168:25
[INFO] [stdout]     |
[INFO] [stdout] 168 |                     len += (text.len() as u32).into();
[INFO] [stdout]     |                         ^^ -------------------------- this method call resolves to `T`
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tom`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "cc8ca2bb24e4be0af8ff5b61201796437f359bde394527710db859c32329a618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc8ca2bb24e4be0af8ff5b61201796437f359bde394527710db859c32329a618", kill_on_drop: false }`
[INFO] [stdout] cc8ca2bb24e4be0af8ff5b61201796437f359bde394527710db859c32329a618
