[INFO] cloning repository https://github.com/anna-hope/rusty-monkey-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anna-hope/rusty-monkey-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanna-hope%2Frusty-monkey-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanna-hope%2Frusty-monkey-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6ce968be63902395bfeef1916fdd219e497a8cb
[INFO] checking anna-hope/rusty-monkey-interpreter against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanna-hope%2Frusty-monkey-interpreter" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anna-hope/rusty-monkey-interpreter on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anna-hope/rusty-monkey-interpreter
[INFO] finished tweaking git repo https://github.com/anna-hope/rusty-monkey-interpreter
[INFO] tweaked toml for git repo https://github.com/anna-hope/rusty-monkey-interpreter written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/anna-hope/rusty-monkey-interpreter 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d11a4074f96df5916850ec3409b8cc8133bf45825de82513902e7fd0fb18a30
[INFO] running `Command { std: "docker" "start" "-a" "6d11a4074f96df5916850ec3409b8cc8133bf45825de82513902e7fd0fb18a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d11a4074f96df5916850ec3409b8cc8133bf45825de82513902e7fd0fb18a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d11a4074f96df5916850ec3409b8cc8133bf45825de82513902e7fd0fb18a30", kill_on_drop: false }`
[INFO] [stdout] 6d11a4074f96df5916850ec3409b8cc8133bf45825de82513902e7fd0fb18a30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e04cfa284f33f45e2c0dff25fe227f0d28db82bf068b6842dafddebcad9ac3ed
[INFO] running `Command { std: "docker" "start" "-a" "e04cfa284f33f45e2c0dff25fe227f0d28db82bf068b6842dafddebcad9ac3ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: method `expression` is never used
[INFO] [stdout]    --> interpreter/src/ast.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 137 |     fn expression(&self) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking repl v0.1.0 (/opt/rustwide/workdir/repl)
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir/monkey)
[INFO] [stdout] warning: method `expression` is never used
[INFO] [stdout]    --> interpreter/src/ast.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 137 |     fn expression(&self) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.06s
[INFO] running `Command { std: "docker" "inspect" "e04cfa284f33f45e2c0dff25fe227f0d28db82bf068b6842dafddebcad9ac3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e04cfa284f33f45e2c0dff25fe227f0d28db82bf068b6842dafddebcad9ac3ed", kill_on_drop: false }`
[INFO] [stdout] e04cfa284f33f45e2c0dff25fe227f0d28db82bf068b6842dafddebcad9ac3ed
[INFO] checking anna-hope/rusty-monkey-interpreter against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanna-hope%2Frusty-monkey-interpreter" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anna-hope/rusty-monkey-interpreter on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anna-hope/rusty-monkey-interpreter
[INFO] finished tweaking git repo https://github.com/anna-hope/rusty-monkey-interpreter
[INFO] tweaked toml for git repo https://github.com/anna-hope/rusty-monkey-interpreter written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/anna-hope/rusty-monkey-interpreter 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bd8073282368dd36f255031bcfb3e4709cb8959fe8df1960b14ec0124a05b98
[INFO] running `Command { std: "docker" "start" "-a" "1bd8073282368dd36f255031bcfb3e4709cb8959fe8df1960b14ec0124a05b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bd8073282368dd36f255031bcfb3e4709cb8959fe8df1960b14ec0124a05b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bd8073282368dd36f255031bcfb3e4709cb8959fe8df1960b14ec0124a05b98", kill_on_drop: false }`
[INFO] [stdout] 1bd8073282368dd36f255031bcfb3e4709cb8959fe8df1960b14ec0124a05b98
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d489f2269a2a5465b210218110b73db25c3791c497f7d0df373fe6bcdbefa9b6
[INFO] running `Command { std: "docker" "start" "-a" "d489f2269a2a5465b210218110b73db25c3791c497f7d0df373fe6bcdbefa9b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: method `expression` is never used
[INFO] [stdout]    --> interpreter/src/ast.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 137 |     fn expression(&self) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking repl v0.1.0 (/opt/rustwide/workdir/repl)
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir/monkey)
[INFO] [stdout] warning: method `expression` is never used
[INFO] [stdout]    --> interpreter/src/ast.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 137 |     fn expression(&self) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `Command { std: "docker" "inspect" "d489f2269a2a5465b210218110b73db25c3791c497f7d0df373fe6bcdbefa9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d489f2269a2a5465b210218110b73db25c3791c497f7d0df373fe6bcdbefa9b6", kill_on_drop: false }`
[INFO] [stdout] d489f2269a2a5465b210218110b73db25c3791c497f7d0df373fe6bcdbefa9b6