[INFO] fetching crate art_p256 0.2.1...
[INFO] checking art_p256-0.2.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate art_p256 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate art_p256 0.2.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate art_p256 0.2.1
[INFO] finished tweaking crates.io crate art_p256 0.2.1
[INFO] tweaked toml for crates.io crate art_p256 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bd8d9e6dc5bab9b1059f21eea9b17ba5ea3d8240f19b7cc8eceed0547b4181b
[INFO] running `Command { std: "docker" "start" "-a" "0bd8d9e6dc5bab9b1059f21eea9b17ba5ea3d8240f19b7cc8eceed0547b4181b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bd8d9e6dc5bab9b1059f21eea9b17ba5ea3d8240f19b7cc8eceed0547b4181b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bd8d9e6dc5bab9b1059f21eea9b17ba5ea3d8240f19b7cc8eceed0547b4181b", kill_on_drop: false }`
[INFO] [stdout] 0bd8d9e6dc5bab9b1059f21eea9b17ba5ea3d8240f19b7cc8eceed0547b4181b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fea88882645fa08ce3d1a621878ae46dceab1ee7ade4625dd55e03c68858300c
[INFO] running `Command { std: "docker" "start" "-a" "fea88882645fa08ce3d1a621878ae46dceab1ee7ade4625dd55e03c68858300c", kill_on_drop: false }`
[INFO] [stderr]     Checking art_p256 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/p256_field.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn add_i(mut a: &mut A512, b: u32, i: usize) {
[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/p256_field.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 |         pub(crate) fn add_i(mut a: &mut A256, b: u32, i: usize) {
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/p256_field.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub(crate) fn sub_i(mut a: &mut A256, b: u32, i: usize) {
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, `p`, and `n` are never read
[INFO] [stdout]   --> src/p256_curve.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ShortWeierstrass {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 20 |     pub a: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 21 |     pub b: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 22 |     pub p: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 23 |     pub n: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ShortWeierstrass` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `P256`
[INFO] [stdout]  --> tests/ecdhe.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate P256;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `art_p256` (test "ecdhe") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/p256_field.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn add_i(mut a: &mut A512, b: u32, i: usize) {
[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/p256_field.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 |         pub(crate) fn add_i(mut a: &mut A256, b: u32, i: usize) {
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/p256_field.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub(crate) fn sub_i(mut a: &mut A256, b: u32, i: usize) {
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, `p`, and `n` are never read
[INFO] [stdout]   --> src/p256_curve.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ShortWeierstrass {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 20 |     pub a: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 21 |     pub b: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 22 |     pub p: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout] 23 |     pub n: A256,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ShortWeierstrass` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fea88882645fa08ce3d1a621878ae46dceab1ee7ade4625dd55e03c68858300c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea88882645fa08ce3d1a621878ae46dceab1ee7ade4625dd55e03c68858300c", kill_on_drop: false }`
[INFO] [stdout] fea88882645fa08ce3d1a621878ae46dceab1ee7ade4625dd55e03c68858300c