[INFO] cloning repository https://github.com/sh1nduu/toy_jvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sh1nduu/toy_jvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh1nduu%2Ftoy_jvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh1nduu%2Ftoy_jvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4086fddab1035939eaa886e145283d3eac99ab34
[INFO] building sh1nduu/toy_jvm against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh1nduu%2Ftoy_jvm" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sh1nduu/toy_jvm on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sh1nduu/toy_jvm
[INFO] finished tweaking git repo https://github.com/sh1nduu/toy_jvm
[INFO] tweaked toml for git repo https://github.com/sh1nduu/toy_jvm written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sh1nduu/toy_jvm 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" "+334963c956d25708feab489a3816ae63f639355d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9bdb5a5afb382f72a5984c42b467f59b5ed0e25788ef28b5832bbee1164a5ae
[INFO] running `Command { std: "docker" "start" "-a" "b9bdb5a5afb382f72a5984c42b467f59b5ed0e25788ef28b5832bbee1164a5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9bdb5a5afb382f72a5984c42b467f59b5ed0e25788ef28b5832bbee1164a5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9bdb5a5afb382f72a5984c42b467f59b5ed0e25788ef28b5832bbee1164a5ae", kill_on_drop: false }`
[INFO] [stdout] b9bdb5a5afb382f72a5984c42b467f59b5ed0e25788ef28b5832bbee1164a5ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4a9a8a1cc4c4b861b787326ba476854b3e2559a98f44e8d5017c85ce397b44c
[INFO] running `Command { std: "docker" "start" "-a" "f4a9a8a1cc4c4b861b787326ba476854b3e2559a98f44e8d5017c85ce397b44c", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling toy_jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `flags` and `descriptor` are never read
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct Field {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 46 |     flags: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 47 |     name: String,
[INFO] [stdout] 48 |     descriptor: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Field` 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: multiple fields are never read
[INFO] [stdout]    --> src/main.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | struct Class {
[INFO] [stdout]     |        ----- fields in this struct
[INFO] [stdout] 138 |     const_pool: ConstPool,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 139 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 140 |     super_: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 141 |     flags: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 142 |     interfaces: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 143 |     fields: Vec<Field>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 144 |     methods: Vec<Field>,
[INFO] [stdout] 145 |     attributes: Vec<Attribute>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Class` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "f4a9a8a1cc4c4b861b787326ba476854b3e2559a98f44e8d5017c85ce397b44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a9a8a1cc4c4b861b787326ba476854b3e2559a98f44e8d5017c85ce397b44c", kill_on_drop: false }`
[INFO] [stdout] f4a9a8a1cc4c4b861b787326ba476854b3e2559a98f44e8d5017c85ce397b44c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5c344f78206b9c94804c8ec5cc8f0e00e37de1677c342cb35f937baebc94bb2
[INFO] running `Command { std: "docker" "start" "-a" "a5c344f78206b9c94804c8ec5cc8f0e00e37de1677c342cb35f937baebc94bb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy_jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `flags` and `descriptor` are never read
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct Field {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 46 |     flags: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 47 |     name: String,
[INFO] [stdout] 48 |     descriptor: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Field` 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: multiple fields are never read
[INFO] [stdout]    --> src/main.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | struct Class {
[INFO] [stdout]     |        ----- fields in this struct
[INFO] [stdout] 138 |     const_pool: ConstPool,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 139 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 140 |     super_: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 141 |     flags: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 142 |     interfaces: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 143 |     fields: Vec<Field>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 144 |     methods: Vec<Field>,
[INFO] [stdout] 145 |     attributes: Vec<Attribute>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Class` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "a5c344f78206b9c94804c8ec5cc8f0e00e37de1677c342cb35f937baebc94bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c344f78206b9c94804c8ec5cc8f0e00e37de1677c342cb35f937baebc94bb2", kill_on_drop: false }`
[INFO] [stdout] a5c344f78206b9c94804c8ec5cc8f0e00e37de1677c342cb35f937baebc94bb2