[INFO] fetching crate feval 0.4.2...
[INFO] checking feval-0.4.2 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate feval 0.4.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate feval 0.4.2
[INFO] finished tweaking crates.io crate feval 0.4.2
[INFO] tweaked toml for crates.io crate feval 0.4.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate feval 0.4.2 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate feval 0.4.2 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallstr v0.2.0
[INFO] [stderr]   Downloaded terminfo v0.8.0
[INFO] [stderr]   Downloaded mortal v0.2.4
[INFO] [stderr]   Downloaded evalexpr v10.0.0
[INFO] [stderr]   Downloaded linefeed v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9b43df3b0f52fb948447214ef77332a48554842cafd47c540087b6e271959ef
[INFO] running `Command { std: "docker" "start" "-a" "f9b43df3b0f52fb948447214ef77332a48554842cafd47c540087b6e271959ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9b43df3b0f52fb948447214ef77332a48554842cafd47c540087b6e271959ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9b43df3b0f52fb948447214ef77332a48554842cafd47c540087b6e271959ef", kill_on_drop: false }`
[INFO] [stdout] f9b43df3b0f52fb948447214ef77332a48554842cafd47c540087b6e271959ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ebb50d25a09a0babde58a65250ddf5a789dc80208bfcf8139866c9a93ce7a79
[INFO] running `Command { std: "docker" "start" "-a" "3ebb50d25a09a0babde58a65250ddf5a789dc80208bfcf8139866c9a93ce7a79", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking bitflags v2.3.1
[INFO] [stderr]     Checking evalexpr v10.0.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking phf v0.11.1
[INFO] [stderr]     Checking smallstr v0.2.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling phf_generator v0.11.1
[INFO] [stderr]    Compiling phf_codegen v0.11.1
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling terminfo v0.8.0
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking mortal v0.2.4
[INFO] [stderr]     Checking linefeed v0.6.0
[INFO] [stderr]     Checking feval v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Write`, `stdin`, and `stdout`
[INFO] [stdout]  --> src/main.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdin, stdout, Write},
[INFO] [stdout]   |          ^^^^^  ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `stdin`, and `stdout`
[INFO] [stdout]  --> src/main.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdin, stdout, Write},
[INFO] [stdout]   |          ^^^^^  ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut reader = Interface::new("feval").unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut reader = Interface::new("feval").unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.93s
[INFO] running `Command { std: "docker" "inspect" "3ebb50d25a09a0babde58a65250ddf5a789dc80208bfcf8139866c9a93ce7a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ebb50d25a09a0babde58a65250ddf5a789dc80208bfcf8139866c9a93ce7a79", kill_on_drop: false }`
[INFO] [stdout] 3ebb50d25a09a0babde58a65250ddf5a789dc80208bfcf8139866c9a93ce7a79