[INFO] cloning repository https://github.com/jawadcode/parser_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jawadcode/parser_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawadcode%2Fparser_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawadcode%2Fparser_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4a352753a461770fccb7456e4c5c63d4abcd2ae
[INFO] checking jawadcode/parser_tutorial against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawadcode%2Fparser_tutorial" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jawadcode/parser_tutorial 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/jawadcode/parser_tutorial
[INFO] finished tweaking git repo https://github.com/jawadcode/parser_tutorial
[INFO] tweaked toml for git repo https://github.com/jawadcode/parser_tutorial written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jawadcode/parser_tutorial 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded logos-derive v0.12.0
[INFO] [stderr]   Downloaded lexical v6.1.0
[INFO] [stderr]   Downloaded beef v0.5.1
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[INFO] [stderr]   Downloaded lexical-util v0.8.3
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[INFO] [stderr]   Downloaded lexical-core v0.8.3
[INFO] [stderr]   Downloaded lexical-parse-float v0.8.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 061ab4d52306af6420623c8a92ad6e33efef56344841dc7f573e222948234ef5
[INFO] running `Command { std: "docker" "start" "-a" "061ab4d52306af6420623c8a92ad6e33efef56344841dc7f573e222948234ef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "061ab4d52306af6420623c8a92ad6e33efef56344841dc7f573e222948234ef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "061ab4d52306af6420623c8a92ad6e33efef56344841dc7f573e222948234ef5", kill_on_drop: false }`
[INFO] [stdout] 061ab4d52306af6420623c8a92ad6e33efef56344841dc7f573e222948234ef5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7e7de86aeec6fca9b526a7f634705cad77dc35a2ae47a73133db57c896860d57
[INFO] running `Command { std: "docker" "start" "-a" "7e7de86aeec6fca9b526a7f634705cad77dc35a2ae47a73133db57c896860d57", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]     Checking lexical-util v0.8.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking lexical-parse-integer v0.8.3
[INFO] [stderr]     Checking lexical-write-integer v0.8.3
[INFO] [stderr]     Checking lexical-write-float v0.8.3
[INFO] [stderr]     Checking lexical-parse-float v0.8.3
[INFO] [stderr]     Checking lexical-core v0.8.3
[INFO] [stderr]     Checking lexical v6.1.0
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking parser_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `prefix_binding_power` is never used
[INFO] [stdout]   --> src/parser.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Operator {
[INFO] [stdout]    |       -------- method in this trait
[INFO] [stdout] 27 |     fn prefix_binding_power(&self) -> Option<((), u8)>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `prefix_binding_power` is never used
[INFO] [stdout]   --> src/parser.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Operator {
[INFO] [stdout]    |       -------- method in this trait
[INFO] [stdout] 27 |     fn prefix_binding_power(&self) -> Option<((), u8)>;
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.11s
[INFO] running `Command { std: "docker" "inspect" "7e7de86aeec6fca9b526a7f634705cad77dc35a2ae47a73133db57c896860d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e7de86aeec6fca9b526a7f634705cad77dc35a2ae47a73133db57c896860d57", kill_on_drop: false }`
[INFO] [stdout] 7e7de86aeec6fca9b526a7f634705cad77dc35a2ae47a73133db57c896860d57
[INFO] checking jawadcode/parser_tutorial against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawadcode%2Fparser_tutorial" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jawadcode/parser_tutorial 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/jawadcode/parser_tutorial
[INFO] finished tweaking git repo https://github.com/jawadcode/parser_tutorial
[INFO] tweaked toml for git repo https://github.com/jawadcode/parser_tutorial written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jawadcode/parser_tutorial 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5eadcae8f9a2b1d4c89c9489f53bd39d4ce23ccc4852bcff7240ea56fe330214
[INFO] running `Command { std: "docker" "start" "-a" "5eadcae8f9a2b1d4c89c9489f53bd39d4ce23ccc4852bcff7240ea56fe330214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5eadcae8f9a2b1d4c89c9489f53bd39d4ce23ccc4852bcff7240ea56fe330214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eadcae8f9a2b1d4c89c9489f53bd39d4ce23ccc4852bcff7240ea56fe330214", kill_on_drop: false }`
[INFO] [stdout] 5eadcae8f9a2b1d4c89c9489f53bd39d4ce23ccc4852bcff7240ea56fe330214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] eba0583247691f758a97f1aee30da577003e005d4b51892b03d7800d9e3d52d0
[INFO] running `Command { std: "docker" "start" "-a" "eba0583247691f758a97f1aee30da577003e005d4b51892b03d7800d9e3d52d0", kill_on_drop: false }`
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]     Checking lexical-util v0.8.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking lexical-parse-integer v0.8.3
[INFO] [stderr]     Checking lexical-write-integer v0.8.3
[INFO] [stderr]     Checking lexical-parse-float v0.8.3
[INFO] [stderr]     Checking lexical-write-float v0.8.3
[INFO] [stderr]     Checking lexical-core v0.8.3
[INFO] [stderr]     Checking lexical v6.1.0
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking parser_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `prefix_binding_power` is never used
[INFO] [stdout]   --> src/parser.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Operator {
[INFO] [stdout]    |       -------- method in this trait
[INFO] [stdout] 27 |     fn prefix_binding_power(&self) -> Option<((), u8)>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `prefix_binding_power` is never used
[INFO] [stdout]   --> src/parser.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Operator {
[INFO] [stdout]    |       -------- method in this trait
[INFO] [stdout] 27 |     fn prefix_binding_power(&self) -> Option<((), u8)>;
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.10s
[INFO] running `Command { std: "docker" "inspect" "eba0583247691f758a97f1aee30da577003e005d4b51892b03d7800d9e3d52d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eba0583247691f758a97f1aee30da577003e005d4b51892b03d7800d9e3d52d0", kill_on_drop: false }`
[INFO] [stdout] eba0583247691f758a97f1aee30da577003e005d4b51892b03d7800d9e3d52d0