[INFO] cloning repository https://github.com/sinkuu/lambdarepl-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinkuu/lambdarepl-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinkuu%2Flambdarepl-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinkuu%2Flambdarepl-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1935917f90a8026b7240622f48f09c3eeb6d46d6
[INFO] checking sinkuu/lambdarepl-rs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinkuu%2Flambdarepl-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinkuu/lambdarepl-rs on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sinkuu/lambdarepl-rs
[INFO] finished tweaking git repo https://github.com/sinkuu/lambdarepl-rs
[INFO] tweaked toml for git repo https://github.com/sinkuu/lambdarepl-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sinkuu/lambdarepl-rs 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded shell32-sys v0.1.1
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded ole32-sys v0.2.0
[INFO] [stderr]   Downloaded ascii v0.7.1
[INFO] [stderr]   Downloaded libc v0.2.16
[INFO] [stderr]   Downloaded combine v2.0.0-beta3
[INFO] [stderr]   Downloaded linefeed v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f740c4b2d411b7643c045375c1f6fd0c85823b37cb2b55c84877fa6f16fef18e
[INFO] running `Command { std: "docker" "start" "-a" "f740c4b2d411b7643c045375c1f6fd0c85823b37cb2b55c84877fa6f16fef18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f740c4b2d411b7643c045375c1f6fd0c85823b37cb2b55c84877fa6f16fef18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f740c4b2d411b7643c045375c1f6fd0c85823b37cb2b55c84877fa6f16fef18e", kill_on_drop: false }`
[INFO] [stdout] f740c4b2d411b7643c045375c1f6fd0c85823b37cb2b55c84877fa6f16fef18e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e37fc135325498ebf1b2caf8785bee53e6d0d3cbc96fb83c16504ec0b9c72328
[INFO] running `Command { std: "docker" "start" "-a" "e37fc135325498ebf1b2caf8785bee53e6d0d3cbc96fb83c16504ec0b9c72328", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking combine v2.0.0-beta3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking linefeed v0.1.5
[INFO] [stderr]     Checking lambdarepl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `letter`
[INFO] [stdout]    --> src/expr.rs:222:31
[INFO] [stdout]     |
[INFO] [stdout] 222 |     use combine::char::{char, letter, spaces};
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `letter`
[INFO] [stdout]    --> src/expr.rs:222:31
[INFO] [stdout]     |
[INFO] [stdout] 222 |     use combine::char::{char, letter, spaces};
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `question_mark` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(question_mark)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `question_mark` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(question_mark)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_var` is never used
[INFO] [stdout]   --> src/expr.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Expr {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn is_var(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `abs`, `app`, `is_var`, and `reduce_to_end` are never used
[INFO] [stdout]    --> src/expr.rs:17:12
[INFO] [stdout]     |
[INFO] [stdout] 12  | impl Expr {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17  |     pub fn abs(ident: &str, e: Expr) -> Expr {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21  |     pub fn app(func: Expr, input: Expr) -> Expr {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25  |     pub fn is_var(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn reduce_to_end(self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.48s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[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" "e37fc135325498ebf1b2caf8785bee53e6d0d3cbc96fb83c16504ec0b9c72328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37fc135325498ebf1b2caf8785bee53e6d0d3cbc96fb83c16504ec0b9c72328", kill_on_drop: false }`
[INFO] [stdout] e37fc135325498ebf1b2caf8785bee53e6d0d3cbc96fb83c16504ec0b9c72328