[INFO] fetching crate itsy 0.2.0...
[INFO] checking itsy-0.2.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate itsy 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate itsy 0.2.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate itsy 0.2.0
[INFO] finished tweaking crates.io crate itsy 0.2.0
[INFO] tweaked toml for crates.io crate itsy 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate itsy 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2facca64f80f5245b56bb11f701c5b0ac2cb307a16772c17bbd3b04414399882
[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" "2facca64f80f5245b56bb11f701c5b0ac2cb307a16772c17bbd3b04414399882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2facca64f80f5245b56bb11f701c5b0ac2cb307a16772c17bbd3b04414399882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2facca64f80f5245b56bb11f701c5b0ac2cb307a16772c17bbd3b04414399882", kill_on_drop: false }`
[INFO] [stdout] 2facca64f80f5245b56bb11f701c5b0ac2cb307a16772c17bbd3b04414399882
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 738b80fd40844c283fd70e861b9845a775d6ddc3047729d1f5f19ce053ae38db
[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" "738b80fd40844c283fd70e861b9845a775d6ddc3047729d1f5f19ce053ae38db", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]     Checking itsy v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Positioned`
[INFO] [stdout]   --> src/bytecode/compiler/compiler.rs:11:45
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::frontend::{ast::{self, Bindable, Positioned, Returns}, resolver::ResolvedProgram};
[INFO] [stdout]    |                                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Positioned`
[INFO] [stdout]   --> src/bytecode/compiler/compiler.rs:11:45
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::frontend::{ast::{self, Bindable, Positioned, Returns}, resolver::ResolvedProgram};
[INFO] [stdout]    |                                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_intrinsic_len`
[INFO] [stdout]     --> src/bytecode/compiler/compiler.rs:1238:8
[INFO] [stdout]      |
[INFO] [stdout] 1238 |     fn write_intrinsic_len(self: &Self, ty: &Type) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_intrinsic_len`
[INFO] [stdout]     --> src/bytecode/compiler/compiler.rs:1238:8
[INFO] [stdout]      |
[INFO] [stdout] 1238 |     fn write_intrinsic_len(self: &Self, ty: &Type) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.23s
[INFO] running `Command { std: "docker" "inspect" "738b80fd40844c283fd70e861b9845a775d6ddc3047729d1f5f19ce053ae38db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "738b80fd40844c283fd70e861b9845a775d6ddc3047729d1f5f19ce053ae38db", kill_on_drop: false }`
[INFO] [stdout] 738b80fd40844c283fd70e861b9845a775d6ddc3047729d1f5f19ce053ae38db