[INFO] fetching crate rysk-tools 0.0.1...
[INFO] testing rysk-tools-0.0.1 against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628
[INFO] extracting crate rysk-tools 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rysk-tools 0.0.1
[INFO] finished tweaking crates.io crate rysk-tools 0.0.1
[INFO] tweaked toml for crates.io crate rysk-tools 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rysk-tools 0.0.1 on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rysk-tools 0.0.1 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 113adc5957c187cbc93ccac35eea7b72bf2a88abc6b7e600cc5d24b1105bb155
[INFO] running `Command { std: "docker" "start" "-a" "113adc5957c187cbc93ccac35eea7b72bf2a88abc6b7e600cc5d24b1105bb155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "113adc5957c187cbc93ccac35eea7b72bf2a88abc6b7e600cc5d24b1105bb155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "113adc5957c187cbc93ccac35eea7b72bf2a88abc6b7e600cc5d24b1105bb155", kill_on_drop: false }`
[INFO] [stdout] 113adc5957c187cbc93ccac35eea7b72bf2a88abc6b7e600cc5d24b1105bb155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2df73c0f0bb8e66f90fd5672469542c60060563b51fdec99db102207363c3388
[INFO] running `Command { std: "docker" "start" "-a" "2df73c0f0bb8e66f90fd5672469542c60060563b51fdec99db102207363c3388", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rysk-tools-macro v0.0.1
[INFO] [stderr]    Compiling rysk-tools v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `MachineInstruction` is never used
[INFO] [stdout]  --> src/instruction.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum MachineInstruction {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]   --> src/instruction.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Instruction {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make_pseudo` is never used
[INFO] [stdout]   --> src/instruction.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Instruction {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 16 |     // Should be in-place in the future
[INFO] [stdout] 17 |     pub fn make_pseudo(instructions: &mut [Self]) -> (Self, &mut [Self]) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PseudoInstruction` is never used
[INFO] [stdout]    --> src/instruction.rs:143:10
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub enum PseudoInstruction {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.26s
[INFO] running `Command { std: "docker" "inspect" "2df73c0f0bb8e66f90fd5672469542c60060563b51fdec99db102207363c3388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2df73c0f0bb8e66f90fd5672469542c60060563b51fdec99db102207363c3388", kill_on_drop: false }`
[INFO] [stdout] 2df73c0f0bb8e66f90fd5672469542c60060563b51fdec99db102207363c3388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dda2303afe6d45ceaff36c52e0c9a8969355d551c0d14386f77aa96b34110de
[INFO] running `Command { std: "docker" "start" "-a" "3dda2303afe6d45ceaff36c52e0c9a8969355d551c0d14386f77aa96b34110de", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `syn v1.0.37`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `syn v1.0.37`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.37`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "3dda2303afe6d45ceaff36c52e0c9a8969355d551c0d14386f77aa96b34110de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dda2303afe6d45ceaff36c52e0c9a8969355d551c0d14386f77aa96b34110de", kill_on_drop: false }`
[INFO] [stdout] 3dda2303afe6d45ceaff36c52e0c9a8969355d551c0d14386f77aa96b34110de