[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#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinkuu%2Flambdarepl-rs" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinkuu/lambdarepl-rs on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-5/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbf9976ed44c064cfaf4b73ee3e585ba238b04ac48ba98fe59f1a0b85e114481
[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" "bbf9976ed44c064cfaf4b73ee3e585ba238b04ac48ba98fe59f1a0b85e114481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbf9976ed44c064cfaf4b73ee3e585ba238b04ac48ba98fe59f1a0b85e114481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbf9976ed44c064cfaf4b73ee3e585ba238b04ac48ba98fe59f1a0b85e114481", kill_on_drop: false }`
[INFO] [stdout] bbf9976ed44c064cfaf4b73ee3e585ba238b04ac48ba98fe59f1a0b85e114481
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6238cb05556dea6574d64dfae75dde20b3625b447881c873d696e02aef73669f
[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" "6238cb05556dea6574d64dfae75dde20b3625b447881c873d696e02aef73669f", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking combine v2.0.0-beta3
[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: 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: 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] [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 5.09s
[INFO] running `Command { std: "docker" "inspect" "6238cb05556dea6574d64dfae75dde20b3625b447881c873d696e02aef73669f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6238cb05556dea6574d64dfae75dde20b3625b447881c873d696e02aef73669f", kill_on_drop: false }`
[INFO] [stdout] 6238cb05556dea6574d64dfae75dde20b3625b447881c873d696e02aef73669f