[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] testing sinkuu/lambdarepl-rs against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinkuu%2Flambdarepl-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinkuu/lambdarepl-rs on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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-13/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: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3197c637a25ba385c734acd40db048b2383c60caac62b45e238272188eff9ac5
[INFO] running `Command { std: "docker" "start" "-a" "3197c637a25ba385c734acd40db048b2383c60caac62b45e238272188eff9ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3197c637a25ba385c734acd40db048b2383c60caac62b45e238272188eff9ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3197c637a25ba385c734acd40db048b2383c60caac62b45e238272188eff9ac5", kill_on_drop: false }`
[INFO] [stdout] 3197c637a25ba385c734acd40db048b2383c60caac62b45e238272188eff9ac5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60345a61adf2777055cc4e5e1cb9dbd1a0d982d34682adf59237f50edfc80041
[INFO] running `Command { std: "docker" "start" "-a" "60345a61adf2777055cc4e5e1cb9dbd1a0d982d34682adf59237f50edfc80041", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling combine v2.0.0-beta3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling linefeed v0.1.5
[INFO] [stderr]    Compiling 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: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/expr.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `abs`
[INFO] [stdout]   --> src/expr.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn abs(ident: &str, e: Expr) -> Expr {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `app`
[INFO] [stdout]   --> src/expr.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn app(func: Expr, input: Expr) -> Expr {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_var`
[INFO] [stdout]   --> src/expr.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn is_var(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reduce_to_end`
[INFO] [stdout]    --> src/expr.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn reduce_to_end(self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.24s
[INFO] running `Command { std: "docker" "inspect" "60345a61adf2777055cc4e5e1cb9dbd1a0d982d34682adf59237f50edfc80041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60345a61adf2777055cc4e5e1cb9dbd1a0d982d34682adf59237f50edfc80041", kill_on_drop: false }`
[INFO] [stdout] 60345a61adf2777055cc4e5e1cb9dbd1a0d982d34682adf59237f50edfc80041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13a22ca8abca25be3935a3cfbd534d516dbc682fb9e7442d551d180630800da4
[INFO] running `Command { std: "docker" "start" "-a" "13a22ca8abca25be3935a3cfbd534d516dbc682fb9e7442d551d180630800da4", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/expr.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_var`
[INFO] [stdout]   --> src/expr.rs:25:12
[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: 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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "13a22ca8abca25be3935a3cfbd534d516dbc682fb9e7442d551d180630800da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13a22ca8abca25be3935a3cfbd534d516dbc682fb9e7442d551d180630800da4", kill_on_drop: false }`
[INFO] [stdout] 13a22ca8abca25be3935a3cfbd534d516dbc682fb9e7442d551d180630800da4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2bc1fdd4877a02dbf7455f7688824854c885d0457eae103013943ece23e25e63
[INFO] running `Command { std: "docker" "start" "-a" "2bc1fdd4877a02dbf7455f7688824854c885d0457eae103013943ece23e25e63", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `letter`
[INFO] [stderr]    --> src/expr.rs:222:31
[INFO] [stderr]     |
[INFO] [stderr] 222 |     use combine::char::{char, letter, spaces};
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `ToString` is imported redundantly
[INFO] [stderr]    --> src/expr.rs:224:9
[INFO] [stderr]     |
[INFO] [stderr] 224 |     use std::string::ToString;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_var`
[INFO] [stderr]   --> src/expr.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn is_var(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `question_mark` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(question_mark)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lambdarepl-fcf94bd77cff9065)
[INFO] [stdout] running 4 tests
[INFO] [stdout] test expr::test_expr_display ... ok
[INFO] [stdout] test expr::test_parser ... ok
[INFO] [stdout] test expr::test_substitute_var_names ... ok
[INFO] [stdout] test expr::test_reduction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2bc1fdd4877a02dbf7455f7688824854c885d0457eae103013943ece23e25e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bc1fdd4877a02dbf7455f7688824854c885d0457eae103013943ece23e25e63", kill_on_drop: false }`
[INFO] [stdout] 2bc1fdd4877a02dbf7455f7688824854c885d0457eae103013943ece23e25e63