[INFO] cloning repository https://github.com/abhijeetbhagat/charon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abhijeetbhagat/charon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66e46690f1169ece25187296786dd7533f9aee94
[INFO] testing abhijeetbhagat/charon against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abhijeetbhagat/charon on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abhijeetbhagat/charon
[INFO] finished tweaking git repo https://github.com/abhijeetbhagat/charon
[INFO] tweaked toml for git repo https://github.com/abhijeetbhagat/charon written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/abhijeetbhagat/charon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.charon_driver.test
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2ccbb378b866c7c42413833cb1a800065bacfb1bdbfd580f6a3264177d3d661
[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" "f2ccbb378b866c7c42413833cb1a800065bacfb1bdbfd580f6a3264177d3d661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ccbb378b866c7c42413833cb1a800065bacfb1bdbfd580f6a3264177d3d661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ccbb378b866c7c42413833cb1a800065bacfb1bdbfd580f6a3264177d3d661", kill_on_drop: false }`
[INFO] [stdout] f2ccbb378b866c7c42413833cb1a800065bacfb1bdbfd580f6a3264177d3d661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 15eec4ecb4711c3f85aff6e44289077f479458bd50543cbeb2fe28d47b37ccd6
[INFO] running `Command { std: "docker" "start" "-a" "15eec4ecb4711c3f85aff6e44289077f479458bd50543cbeb2fe28d47b37ccd6", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.charon_driver.test
[INFO] [stderr]    Compiling itertools v0.4.16
[INFO] [stderr]    Compiling llvm-sys v0.2.1
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/src/libsyntax)
[INFO] [stdout] warning: unknown lint: `enum_variant_names`
[INFO] [stdout]   --> src/libsyntax/ast.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[allow(enum_variant_names)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `enum_variant_names`
[INFO] [stdout]   --> src/libsyntax/ast.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[allow(enum_variant_names)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/libsyntax/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(convert)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/libsyntax/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(plugin)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/libsyntax/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]extern crate itertools;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/libsyntax/parse/lexer/mod.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |             '0' ... '9' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/libsyntax/parse/lexer/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |             'a' ... 'z' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Local`, `Stmt`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ast::{Stmt, Expr, Block, TType, Local, Decl, OptionalTypeExprTupleList, OptionalParamInfoList, OptionalIdTypePairs};
[INFO] [stdout]   |           ^^^^                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Stmt::*`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use ast::Stmt::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeMap`
[INFO] [stdout]  --> src/libsyntax/ast.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap, BTreeMap};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visitor`
[INFO] [stdout]  --> src/libsyntax/ast.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use visit::{Visitor};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OptionalIdTypePairs`
[INFO] [stdout]  --> src/libsyntax/visitor_impl.rs:5:39
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ast::{Binding, Expr, Decl, TType, OptionalIdTypePairs};
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> src/libsyntax/visitor_impl.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syntax` due to 3 previous errors; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "15eec4ecb4711c3f85aff6e44289077f479458bd50543cbeb2fe28d47b37ccd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15eec4ecb4711c3f85aff6e44289077f479458bd50543cbeb2fe28d47b37ccd6", kill_on_drop: false }`
[INFO] [stdout] 15eec4ecb4711c3f85aff6e44289077f479458bd50543cbeb2fe28d47b37ccd6