[INFO] cloning repository https://github.com/rudolfschmidt/acc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rudolfschmidt/acc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frudolfschmidt%2Facc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frudolfschmidt%2Facc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcb0e4d8bb3d795dcfbd57c18831daccd27efd5a
[INFO] testing rudolfschmidt/acc against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frudolfschmidt%2Facc" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rudolfschmidt/acc on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rudolfschmidt/acc
[INFO] finished tweaking git repo https://github.com/rudolfschmidt/acc
[INFO] tweaked toml for git repo https://github.com/rudolfschmidt/acc written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rudolfschmidt/acc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.2.12
[INFO] [stderr]   Downloaded colored v1.9.3
[INFO] [stderr]   Downloaded num-iter v0.1.41
[INFO] [stderr]   Downloaded num-integer v0.1.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fed46c95281043310baa09fa2dc387c6e42b17341d8bfcdf9086bc33323cfa0e
[INFO] running `Command { std: "docker" "start" "-a" "fed46c95281043310baa09fa2dc387c6e42b17341d8bfcdf9086bc33323cfa0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fed46c95281043310baa09fa2dc387c6e42b17341d8bfcdf9086bc33323cfa0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fed46c95281043310baa09fa2dc387c6e42b17341d8bfcdf9086bc33323cfa0e", kill_on_drop: false }`
[INFO] [stdout] fed46c95281043310baa09fa2dc387c6e42b17341d8bfcdf9086bc33323cfa0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d0d77b980da27fa7381996925afe24319dfc4886d8ff2ed5734482c500a93d
[INFO] running `Command { std: "docker" "start" "-a" "a9d0d77b980da27fa7381996925afe24319dfc4886d8ff2ed5734482c500a93d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling acc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::super::model::Comment`
[INFO] [stdout]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::model::Comment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `natural`
[INFO] [stdout]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_next` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_any_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::model::Comment`
[INFO] [stdout]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::model::Comment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `natural`
[INFO] [stdout]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Total` is never constructed
[INFO] [stdout]   --> src/lib/model.rs:44:2
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub enum Costs {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 44 |     Total(MixedAmount),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Costs` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_next` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_any_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.00s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a9d0d77b980da27fa7381996925afe24319dfc4886d8ff2ed5734482c500a93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d0d77b980da27fa7381996925afe24319dfc4886d8ff2ed5734482c500a93d", kill_on_drop: false }`
[INFO] [stdout] a9d0d77b980da27fa7381996925afe24319dfc4886d8ff2ed5734482c500a93d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fff88c62d5c7cd7a677ece757130443a0c319eb9356fe8a070912fad752a29ae
[INFO] running `Command { std: "docker" "start" "-a" "fff88c62d5c7cd7a677ece757130443a0c319eb9356fe8a070912fad752a29ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling acc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::super::model::Comment`
[INFO] [stdout]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::model::Comment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `natural`
[INFO] [stdout]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_next` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_any_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::model::Comment`
[INFO] [stdout]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::model::Comment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::model::Comment`
[INFO] [stdout]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::model::Comment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `natural`
[INFO] [stdout]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `natural`
[INFO] [stdout]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stdout]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_next` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_any_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Total` is never constructed
[INFO] [stdout]   --> src/lib/model.rs:44:2
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub enum Costs {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 44 |     Total(MixedAmount),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Costs` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_next` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_any_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_char` is never used
[INFO] [stdout]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "fff88c62d5c7cd7a677ece757130443a0c319eb9356fe8a070912fad752a29ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff88c62d5c7cd7a677ece757130443a0c319eb9356fe8a070912fad752a29ae", kill_on_drop: false }`
[INFO] [stdout] fff88c62d5c7cd7a677ece757130443a0c319eb9356fe8a070912fad752a29ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 16e6c5ca0b47fedd1670dea7f8b2e6b8a53a64b7cdc416261ac685e29bbe13a1
[INFO] running `Command { std: "docker" "start" "-a" "16e6c5ca0b47fedd1670dea7f8b2e6b8a53a64b7cdc416261ac685e29bbe13a1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `super::super::model::Comment`
[INFO] [stderr]  --> src/lib/commands/print/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::super::model::Comment;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `natural`
[INFO] [stderr]   --> src/lib/commands/print/mod.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn print(items: Vec<Item>, natural: bool) -> Result<(), String> {
[INFO] [stderr]    |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_natural`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `expect_next` is never used
[INFO] [stderr]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_any_char` is never used
[INFO] [stderr]   --> src/lib/parsers/tokenizer/chars.rs:80:15
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub(super) fn is_any_char(tokenizer: &Tokenizer) -> bool {
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_char` is never used
[INFO] [stderr]   --> src/lib/parsers/tokenizer/chars.rs:87:15
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub(super) fn is_char(tokenizer: &Tokenizer, char: char) -> bool {
[INFO] [stderr]    |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `acc` (lib) generated 5 warnings (run `cargo fix --lib -p acc` to apply 2 suggestions)
[INFO] [stderr] warning: `acc` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr] warning: found module declaration for lib.rs
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod lib;
[INFO] [stderr]   | ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: lib.rs is the root of this crate's library target
[INFO] [stderr]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stderr]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Total` is never constructed
[INFO] [stderr]   --> src/lib/model.rs:44:2
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub enum Costs {
[INFO] [stderr]    |          ----- variant in this enum
[INFO] [stderr] 44 |     Total(MixedAmount),
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Costs` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `expect_next` is never used
[INFO] [stderr]   --> src/lib/parsers/tokenizer/chars.rs:56:15
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub(super) fn expect_next(tokenizer: &mut Tokenizer) -> Result<(), Error> {
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `acc` (bin "acc" test) generated 7 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib/mod.rs (/opt/rustwide/target/debug/deps/acc-061b8605a02b9e32)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/acc-8a53334a437a3548)
[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] [stderr]    Doc-tests acc
[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" "16e6c5ca0b47fedd1670dea7f8b2e6b8a53a64b7cdc416261ac685e29bbe13a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e6c5ca0b47fedd1670dea7f8b2e6b8a53a64b7cdc416261ac685e29bbe13a1", kill_on_drop: false }`
[INFO] [stdout] 16e6c5ca0b47fedd1670dea7f8b2e6b8a53a64b7cdc416261ac685e29bbe13a1
[INFO] testing rudolfschmidt/acc against beta-2024-01-09 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frudolfschmidt%2Facc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rudolfschmidt/acc on toolchain beta-2024-01-09
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rudolfschmidt/acc
[INFO] finished tweaking git repo https://github.com/rudolfschmidt/acc
[INFO] tweaked toml for git repo https://github.com/rudolfschmidt/acc written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rudolfschmidt/acc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc38ab624971d65157f5b19f9912c383dbea3d4cc21767fe05b50c6d7634a57c
[INFO] running `Command { std: "docker" "start" "-a" "dc38ab624971d65157f5b19f9912c383dbea3d4cc21767fe05b50c6d7634a57c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc38ab624971d65157f5b19f9912c383dbea3d4cc21767fe05b50c6d7634a57c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc38ab624971d65157f5b19f9912c383dbea3d4cc21767fe05b50c6d7634a57c", kill_on_drop: false }`
[INFO] [stdout] dc38ab624971d65157f5b19f9912c383dbea3d4cc21767fe05b50c6d7634a57c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ddd64ea3c71a0539f1fd516847b20ffd3ac8916889e0f0668a654eb8c1b5bd7
[INFO] running `Command { std: "docker" "start" "-a" "9ddd64ea3c71a0539f1fd516847b20ffd3ac8916889e0f0668a654eb8c1b5bd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/650745ceb2ae60e04f8cd7bfb671fc37239533e4/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9ddd64ea3c71a0539f1fd516847b20ffd3ac8916889e0f0668a654eb8c1b5bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddd64ea3c71a0539f1fd516847b20ffd3ac8916889e0f0668a654eb8c1b5bd7", kill_on_drop: false }`
[INFO] [stdout] 9ddd64ea3c71a0539f1fd516847b20ffd3ac8916889e0f0668a654eb8c1b5bd7
