[INFO] fetching crate rexpr 1.0.7...
[INFO] checking rexpr-1.0.7 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate rexpr 1.0.7 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rexpr 1.0.7 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rexpr 1.0.7
[INFO] finished tweaking crates.io crate rexpr 1.0.7
[INFO] tweaked toml for crates.io crate rexpr 1.0.7 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--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]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding dashmap v4.0.2 (latest: v6.0.1)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7319cec8fda805ced8bec4ba3a641170a0278aad7f5e7413d4958eed847c02f8
[INFO] running `Command { std: "docker" "start" "-a" "7319cec8fda805ced8bec4ba3a641170a0278aad7f5e7413d4958eed847c02f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7319cec8fda805ced8bec4ba3a641170a0278aad7f5e7413d4958eed847c02f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7319cec8fda805ced8bec4ba3a641170a0278aad7f5e7413d4958eed847c02f8", kill_on_drop: false }`
[INFO] [stdout] 7319cec8fda805ced8bec4ba3a641170a0278aad7f5e7413d4958eed847c02f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dce39342e31bead97a046327e14573228739251b6144f7d618b6337b61aa4b45
[INFO] running `Command { std: "docker" "start" "-a" "dce39342e31bead97a046327e14573228739251b6144f7d618b6337b61aa4b45", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]     Checking rexpr v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cache::RWLockMapCache;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cache::RWLockMapCache;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RWLockMapCache` is never constructed
[INFO] [stdout]  --> src/cache.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RWLockMapCache {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RWLockMapCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `try_read` and `try_write` are never used
[INFO] [stdout]   --> src/cache.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl RWLockMapCache {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 12 |     pub fn try_read(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn try_write(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RWLockMapCache` is never constructed
[INFO] [stdout]  --> src/cache.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RWLockMapCache {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RWLockMapCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `try_read` and `try_write` are never used
[INFO] [stdout]   --> src/cache.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl RWLockMapCache {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 12 |     pub fn try_read(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn try_write(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.58s
[INFO] running `Command { std: "docker" "inspect" "dce39342e31bead97a046327e14573228739251b6144f7d618b6337b61aa4b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dce39342e31bead97a046327e14573228739251b6144f7d618b6337b61aa4b45", kill_on_drop: false }`
[INFO] [stdout] dce39342e31bead97a046327e14573228739251b6144f7d618b6337b61aa4b45