[INFO] fetching crate symtool 0.1.4...
[INFO] testing symtool-0.1.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate symtool 0.1.4 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate symtool 0.1.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate symtool 0.1.4
[INFO] finished tweaking crates.io crate symtool 0.1.4
[INFO] tweaked toml for crates.io crate symtool 0.1.4 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] crate crates.io crate symtool 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f02e4efe8b81a7c80067404aa3ac800db65f7099d0f381ff100ef4a2d963dda
[INFO] running `Command { std: "docker" "start" "-a" "7f02e4efe8b81a7c80067404aa3ac800db65f7099d0f381ff100ef4a2d963dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f02e4efe8b81a7c80067404aa3ac800db65f7099d0f381ff100ef4a2d963dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f02e4efe8b81a7c80067404aa3ac800db65f7099d0f381ff100ef4a2d963dda", kill_on_drop: false }`
[INFO] [stdout] 7f02e4efe8b81a7c80067404aa3ac800db65f7099d0f381ff100ef4a2d963dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aac6377b6737e8f26b80d16ee7670983f37f45f70052acd66998be9c263ea3b
[INFO] running `Command { std: "docker" "start" "-a" "8aac6377b6737e8f26b80d16ee7670983f37f45f70052acd66998be9c263ea3b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling term_size v0.3.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling scroll v0.10.1
[INFO] [stderr]    Compiling goblin v0.4.0
[INFO] [stderr]    Compiling symtool-backend v0.3.0
[INFO] [stderr]    Compiling symtool v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.30s
[INFO] running `Command { std: "docker" "inspect" "8aac6377b6737e8f26b80d16ee7670983f37f45f70052acd66998be9c263ea3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aac6377b6737e8f26b80d16ee7670983f37f45f70052acd66998be9c263ea3b", kill_on_drop: false }`
[INFO] [stdout] 8aac6377b6737e8f26b80d16ee7670983f37f45f70052acd66998be9c263ea3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a50a8fde448f43b243b0f8f40f45ad1941eb8da130de44f57fc2aac396517d1d
[INFO] running `Command { std: "docker" "start" "-a" "a50a8fde448f43b243b0f8f40f45ad1941eb8da130de44f57fc2aac396517d1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling symtool v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "a50a8fde448f43b243b0f8f40f45ad1941eb8da130de44f57fc2aac396517d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a50a8fde448f43b243b0f8f40f45ad1941eb8da130de44f57fc2aac396517d1d", kill_on_drop: false }`
[INFO] [stdout] a50a8fde448f43b243b0f8f40f45ad1941eb8da130de44f57fc2aac396517d1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7a82b0108e54aeaccc89ab6238f528d8149614a649c8c387569038d2c8cc4008
[INFO] running `Command { std: "docker" "start" "-a" "7a82b0108e54aeaccc89ab6238f528d8149614a649c8c387569038d2c8cc4008", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/symtool-c88f8ed519177f40)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a82b0108e54aeaccc89ab6238f528d8149614a649c8c387569038d2c8cc4008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a82b0108e54aeaccc89ab6238f528d8149614a649c8c387569038d2c8cc4008", kill_on_drop: false }`
[INFO] [stdout] 7a82b0108e54aeaccc89ab6238f528d8149614a649c8c387569038d2c8cc4008