[INFO] cloning repository https://github.com/CluEleSsUK/rust-toy-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CluEleSsUK/rust-toy-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-toy-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-toy-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb2300224b2be92e37850ccdb6660e7080920193
[INFO] testing CluEleSsUK/rust-toy-compiler against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-toy-compiler" "/workspace/builds/worker-114/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-114/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CluEleSsUK/rust-toy-compiler on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CluEleSsUK/rust-toy-compiler
[INFO] finished tweaking git repo https://github.com/CluEleSsUK/rust-toy-compiler
[INFO] tweaked toml for git repo https://github.com/CluEleSsUK/rust-toy-compiler written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] crate git repo https://github.com/CluEleSsUK/rust-toy-compiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4adaf83b34db4367720e0d6a2d52b8a25a1ff4bc4b064de4de188f5840d1eb22
[INFO] running `Command { std: "docker" "start" "-a" "4adaf83b34db4367720e0d6a2d52b8a25a1ff4bc4b064de4de188f5840d1eb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4adaf83b34db4367720e0d6a2d52b8a25a1ff4bc4b064de4de188f5840d1eb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4adaf83b34db4367720e0d6a2d52b8a25a1ff4bc4b064de4de188f5840d1eb22", kill_on_drop: false }`
[INFO] [stdout] 4adaf83b34db4367720e0d6a2d52b8a25a1ff4bc4b064de4de188f5840d1eb22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e04276b4e1d36ce78a9f70022cd605dfef034116c3d9a3f8f335d1ea5858aeaa
[INFO] running `Command { std: "docker" "start" "-a" "e04276b4e1d36ce78a9f70022cd605dfef034116c3d9a3f8f335d1ea5858aeaa", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling rand v0.4.6
[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 speculoos v0.8.0
[INFO] [stderr]    Compiling toy-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lexer::Token`
[INFO] [stdout]   --> src/parser.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use crate::lexer::Token;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expression`, `ValueType`, `parse`
[INFO] [stdout]   --> src/parser.rs:74:25
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use crate::parser::{Expression, parse, ValueType};
[INFO] [stdout]    |                         ^^^^^^^^^^  ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `speculoos::prelude::*`
[INFO] [stdout]   --> src/parser.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use speculoos::prelude::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 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 `toy-compiler` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e04276b4e1d36ce78a9f70022cd605dfef034116c3d9a3f8f335d1ea5858aeaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e04276b4e1d36ce78a9f70022cd605dfef034116c3d9a3f8f335d1ea5858aeaa", kill_on_drop: false }`
[INFO] [stdout] e04276b4e1d36ce78a9f70022cd605dfef034116c3d9a3f8f335d1ea5858aeaa